content string | quality_label int64 | meta string | all-MiniLM-L6-v2_embedding list | doc_id int64 | unique_id string |
|---|---|---|---|---|---|
I don't even know where to start...
I've always enjoyed Algebra/Calculus. I wish I could say the same about problems.
Since we have a right triangle you did well to think of the Pythagorean theorem. Now, if we label the horizontal leg of the triangle $x$, we know the vertical leg is fixed at 50 ft., and let's label
th... | 5 | [
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Magnetic Forces Investigation of Bulk HTS over Permanent Magnetic Guideway under Different Lateral Offset with 3D-Model Numerical Method
Advances in Materials Science and Engineering
Volume 2012 (2012), Article ID 640497, 6 pages
http://dx.doi.org/10.1155/2012/640497
Research Article
Magnetic Forces Investigation of ... | 4 | [
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gl(3) commutation relations question
September 8th 2011, 06:18 AM
wik_chick88
gl(3) commutation relations question
consider the polynomial algebra $C[x_1, x_2, x_3]$ with $x_1, x_2, x_3$ 3 independent real variables
show that the differential operators
$a_{ij} = x_{i}\frac{\partial}{\partial x_{j}}$
... | 5 | [
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Proposition 113
The square on a rational straight line, if applied to an apotome, produces as breadth the binomial straight line the terms of which are commensurable with the terms of the apotome and in the same
ratio; and further the binomial so arising has the same order as the apotome.
Let A be a rational straight... | 5 | [
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Structural Transitions in Sheared Electrically Stabilized Colloidal Crystals
Journal of Applied Chemistry
Volume 2013 (2013), Article ID 909841, 7 pages
http://dx.doi.org/10.1155/2013/909841
Research Article
Structural Transitions in Sheared Electrically Stabilized Colloidal Crystals
^1Technische Universität Berlin,... | 4 | [
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Multiple Solutions for a Class of Fractional Boundary Value Problems
Abstract and Applied Analysis
Volume 2012 (2012), Article ID 468980, 16 pages
http://dx.doi.org/10.1155/2012/468980
Research Article
Multiple Solutions for a Class of Fractional Boundary Value Problems
Department of Mathematics, Harbin Engineering ... | 5 | [
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Squeeze Theorem
How would I use the squeeze theorem to evaluate for: $lim_{n\to\infty}\{\frac{1}{\sqrt{n^2+1}} + \frac{1}{\sqrt{n^2+2}} + ... + \frac{1}{\sqrt{n^2 + n}} \}$
$\frac{n}<br /> {{\sqrt {n^2 + n} }} \leqslant \sum\limits_{k = 1}^n {\frac{1}<br /> {{\sqrt {n^2 + k} }}} \leqslant \frac{n}<br /> {{\sqrt {n^2 +... | 5 | [
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please help with limits of indeterminate forms
March 19th 2009, 06:40 PM
nosh
please help with limits of indeterminate forms
Im horrible at this :( sorry about it being bold .. it wont unbold
How do you evaluate the following limits
1) lim x----> 3 [ ( l x-3 l ) / ( x-3 ) ]
2) lim x --->4/8 [ ( 3x^... | 5 | [
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equation soluble
October 20th 2013, 01:47 PM
Sonifa
equation soluble
p is an odd prime
(a) show that x^2+y^2+1=0 (mod p) is soluble
(b)
show that x^2+y^2+1=0 (mod p) is soluble for any squarefree odd m
For (a)
hint given : count the integers in {0,1,2,...,p-1} of the form x^2 modulo p and
... | 5 | [
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A man walks then runs...
June 20th 2009, 04:49 AM
Stroodle
A man walks then runs...
A man walks at a speed of 2 km/h for 45 minutes and then runs at 4 km/h for 30 minutes. Let $S$ km be the distance the man has run after $t$ minutes. The distance travelled can be described by:
$S(t)=\left\{\begin{array}{ll}... | 4 | [
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Useful Solutions for Plane Wave Diffraction by Dielectric Slabs and Wedges
International Journal of Antennas and Propagation
Volume 2012 (2012), Article ID 151287, 7 pages
http://dx.doi.org/10.1155/2012/151287
Review Article
Useful Solutions for Plane Wave Diffraction by Dielectric Slabs and Wedges
D.I.E.I.I., Unive... | 4 | [
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On Growth of Meromorphic Solutions of Complex Functional Difference Equations
Abstract and Applied Analysis
Volume 2014 (2014), Article ID 828746, 6 pages
http://dx.doi.org/10.1155/2014/828746
Research Article
On Growth of Meromorphic Solutions of Complex Functional Difference Equations
^1Department of Mathematics, ... | 5 | [
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Stability Analysis of a Repairable System with Warning Device and Repairman Vacation
Journal of Function Spaces and Applications
Volume 2013 (2013), Article ID 674191, 19 pages
http://dx.doi.org/10.1155/2013/674191
Research Article
Stability Analysis of a Repairable System with Warning Device and Repairman Vacation
... | 4 | [
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Asymptotic Dichotomy in a Class of Odd-Order Nonlinear Differential Equations with Impulses
Journal of Industrial Mathematics
Volume 2013 (2013), Article ID 421231, 9 pages
http://dx.doi.org/10.1155/2013/421231
Research Article
Asymptotic Dichotomy in a Class of Odd-Order Nonlinear Differential Equations with Impulse... | 5 | [
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Social Diffusion (Integration)
September 18th 2012, 08:32 AM #1
Junior Member
Joined
Aug 2012
From
Texas
Posts
48
Social Diffusion (Integration)
In a sufficiently large population the number x who have the information is treated as a differentiable function of time t The rate of diffusion, dx/dt, is ... | 4 | [
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Orthogonal projection and linear transformation
June 12th 2011, 04:08 AM #1
Newbie
Joined
Apr 2011
Posts
7
Orthogonal projection and linear transformation
Let T : R^3 -> R^3 be orthogonal projection onto the plane x + y + z = 0.
a) Show that the closest point to (1,0,0) on the plane x + y + z = - is ... | 4 | [
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Homework Help
Posted by Becca on Monday, April 8, 2013 at 10:38pm.
Two questions I need help with.
Find the indicated partial sum using the information given.
1. a3=4/9, a7=9/64, S6
Determine wheater the infinite geometric series has a finite sum
2. 6+ 3+ 3/2 + 3/4 +....
3. -49 + (-7) + (- 1/7) +...
• Algebra ... | 4 | [
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Numerical Characterization of DNA Sequence Based on Dinucleotides
The Scientific World Journal
Volume 2012 (2012), Article ID 104269, 6 pages
http://dx.doi.org/10.1100/2012/104269
Research Article
Numerical Characterization of DNA Sequence Based on Dinucleotides
^1School of Mathematics and Statistics, Shandong Unive... | 4 | [
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Homework Help
Posted by irma on Sunday, May 12, 2013 at 1:38am.
a square sheet of tin 30cm on a side is to be used to make an open - top box by cutting a small square of tin from each corner and bending up the sides. how large should be the square cut from each
corner to make the box's volume as large as possible
•... | 4 | [
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Partial Fraction Decomposition
March 14th 2013, 03:23 PM
Steelers72
Partial Fraction Decomposition
All I need to do is write the form of the partial function (I don't have to find the numerical values) of this:
x^2/(x^2-2x-2) partial fraction decomposition
I know the rule of quadratic factor is Ax+B/ax... | 4 | [
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Help with lagrange problem
April 29th 2009, 10:53 AM #1
Member
Joined
Dec 2008
Posts
228
Help with lagrange problem
The third degree Taylor polynomial of f around x=2 is...
T(x) = 7 - 9(x-2)^2 - 3(x-2)^3
The fourth derivative satisfies the inequality [abs(f''''(x))] <_ 6 for all x in the close... | 5 | [
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arithmetic progression
October 17th 2008, 08:55 AM #1
I need help solving this word problem..
Q1 )There was a need for one table at the catering company's first event. Two table were needed for the second event, three table the third event and so on. one table seats 10 and two table seats
18. If the table... | 4 | [
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Variance of a branching process
August 11th 2011, 06:46 AM #1
Member
Joined
Aug 2010
Posts
77
Variance of a branching process
Let $N_j$ be the size of the jth generation of a branching process with $N_0 = 1$. Suppose the number of offspring produced by an individual has mean $\mu$ and variance ${\sigma}^... | 5 | [
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Estimation Risk Modeling in Optimal Portfolio Selection: An Empirical Study from Emerging Markets
Economics Research International
Volume 2010 (2010), Article ID 340181, 10 pages
http://dx.doi.org/10.1155/2010/340181
Research Article
Estimation Risk Modeling in Optimal Portfolio Selection: An Empirical Study from Eme... | 4 | [
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0.029418945312... | 26,623 | 26623 | |
Differentiating a rational function
June 3rd 2007, 11:49 PM #1
Junior Member
Joined
Jun 2007
Posts
62
Differentiating a rational function
Hello
Excuse me if I make any improper use of mathematical experssions because English isn't my mother-tongue and I don't study math in English.
I'm a high s... | 5 | [
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Exponential Stability of Impulsive Stochastic Functional Differential Systems with Delayed Impulses
Abstract and Applied Analysis
Volume 2013 (2013), Article ID 548712, 8 pages
http://dx.doi.org/10.1155/2013/548712
Research Article
Exponential Stability of Impulsive Stochastic Functional Differential Systems with Del... | 5 | [
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A driver.....
July 31st 2006, 04:31 PM
Celia
A driver.....
A driver releases an air bubble of volume 2.0 cm3 from a depth of 15 m below the surface of a lake, where the temperature is 7.0oC. What is the volume of the bubble when it reaches just below the
surface of the lake, where the temperature is 20oC?
J... | 4 | [
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Solutions of Unified Fractional Schrödinger Equations
ISRN Mathematical Physics
Volume 2012 (2012), Article ID 935365, 7 pages
http://dx.doi.org/10.5402/2012/935365
Research Article
Solutions of Unified Fractional Schrödinger Equations
^1Department of Mathematics, University of Rajasthan, Jaipur 302055, Rajasthan, I... | 5 | [
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0.03076171875,
0.01287841796875,
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... | 26,627 | 26627 | |
How to Find the Perimeter of a Trapezoid With a Missing Side | The Classroom | Synonym
A trapezoid is a quadrilateral with two parallel sides. In geometry, you may be asked to find a missing side of a trapezoid, given the area and height. For example: a trapezoid has an area of 171 cm^
2, a side of 10 cm and a height o... | 4 | [
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Construction and Composition of Rooted Trees via Descent Functions
Algebra
Volume 2013 (2013), Article ID 543913, 11 pages
http://dx.doi.org/10.1155/2013/543913
Research Article
Construction and Composition of Rooted Trees via Descent Functions
^1Dipartimento di Ingegneria Meccanica e Aerospaziale, Politecnico di To... | 5 | [
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0.06298828125,
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Propagation of Measurement-While-Drilling Mud Pulse during High Temperature Deep Well Drilling Operations
Mathematical Problems in Engineering
Volume 2013 (2013), Article ID 243670, 12 pages
http://dx.doi.org/10.1155/2013/243670
Research Article
Propagation of Measurement-While-Drilling Mud Pulse during High Temperat... | 4 | [
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The rows of this unitary matrix form an orthonormal set but the columns don't. Why?
September 8th 2013, 02:54 PM #1
Super Member
Joined
Nov 2008
Posts
597
The rows of this unitary matrix form an orthonormal set but the columns don't. Why?
The rows of this ( {{1/3 - 2/3i,2/3i},{-2/3i,-1/3-2/3i}} - Wolfram... | 4 | [
-0.0859375,
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-0.078125,
-0.01287... | 26,631 | 26631 | |
Tangent plane to a surface
July 3rd 2012, 01:48 PM #1
Newbie
Joined
Jul 2012
From
Ames
Posts
2
Tangent plane to a surface
Hello all,
I am studying for a calc three test and came across a problem I got stuck on the problem is as follows.
given the function g(x,y,z)= x^2 ln y+y z find an equat... | 4 | [
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-0.0539550781... | 26,632 | 26632 | |
Connected Unit Disk
April 25th 2010, 11:38 PM #1
Connected Unit Disk
This is a fun problem:
Challenge: Prove in as many, and as indirect, ways that the unit disk $\mathbb{D}$ with the usual topology is connected and/or path connected (they are equivalent, but show either one).
Note: While any and all s... | 5 | [
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A level maths questions on inequalities and simultaneous equations
February 21st 2009, 02:11 AM
Turple
A level maths questions on inequalities and simultaneous equations
I have mock exams next week and have been trying to revise inequalities and sim eqs but I am finding any questions using a constant, k and the ... | 4 | [
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Complex integration of cos^2 z, please help?
April 1st 2013, 02:58 AM #1
Junior Member
Joined
Jan 2013
From
Wah Cantt
Posts
33
Complex integration of cos^2 z, please help?
Integral of (cos^2 z) from ( - pi ) iota along |z|= pi to (pi) iota in the right half plane
STATE IF THE FUNCTION IS ANALYTIC... | 5 | [
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Fractions and Division
July 7th 2011, 10:42 AM #1
Newbie
Joined
Apr 2011
Posts
14
Fractions and Division
I seem to be having trouble with the following types of problems.
$\dfrac{3y^8}{9y^1^2}$
and
$\dfrac{6y^7}{10y^2}$
After a bit of thinking I realized that on the first problem, th... | 4 | [
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0.0429... | 26,636 | 26636 | |
Finding equation of a Tangent Line
June 2nd 2009, 02:36 PM #1
Newbie
Joined
May 2009
Posts
14
Finding equation of a Tangent Line
Find an equation of the line that is tangent to the graph of f and parallel to the given line.
Function: f(x) = 2x^2
Line: 4x – y + 4 = 0
Tell me what I'm doing ... | 4 | [
0.005462646484375,
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0.140625,
-0.0... | 26,637 | 26637 | |
Parallel and Perpendicular Lines
« Lines Polar Coordinates »
Analytic Geometry: (lesson 3 of 4)
Parallel and Perpendicular Lines
Given two lines
If
Example 1:
y = 3x + 14 is parallel to y = 3x - 72
If two lines are not parallel, there exist a point of intersection. This point can be found by solving the two equ... | 4 | [
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... | 26,638 | 26638 | |
Math Help
Mmm. Integration by parts: $u=\sqrt{x-3}\implies du=\frac1{2\sqrt{x-3}}\,dx$ & $dv=x^{-2}\,dx\implies v=-\frac1x.$ The integral becomes to $\int {\frac{{\sqrt {x - 3} }}<br /> {{x^2 }}\,dx} = - \frac
{{\sqrt {x - 3} }}<br /> {x} + \frac{1}<br /> {2}\underbrace {\int {\frac{1}<br /> {{x\sqrt {x - 3} }}\,dx} }... | 5 | [
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Multidimensional Costas Arrays and Their Enumeration Using GPUs and FPGAs
International Journal of Reconfigurable Computing
Volume 2012 (2012), Article ID 196761, 9 pages
http://dx.doi.org/10.1155/2012/196761
Research Article
Multidimensional Costas Arrays and Their Enumeration Using GPUs and FPGAs
Department of Com... | 4 | [
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Bound States in Delta Function Potentials
Journal of Atomic, Molecular, and Optical Physics
Volume 2011 (2011), Article ID 573179, 4 pages
http://dx.doi.org/10.1155/2011/573179
Research Article
Bound States in Delta Function Potentials
Department of Physics, University of Colorado, Boulder, CO 80309, USA
Received 2... | 4 | [
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points of tangency (plz help)
August 23rd 2009, 10:30 AM #1
Junior Member
Joined
Aug 2009
From
America
Posts
29
points of tangency (plz help)
1.)for the circle x^2+y^2+6x-4y+3=0
find the equation of the tangent line at (-2,5)
2.)a circle is tangent to the y-axis at y=3 and has one x-intercep... | 4 | [
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Proof/derivation of the trapezium rule error estimate
November 16th 2012, 07:17 AM
MattBurrows
Proof/derivation of the trapezium rule error estimate
Hi, I'm trying to derive the error estimate in the trapezium rule but can't find any derivations on the internet and don't understand my lecturers notes after one p... | 5 | [
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-... | 26,643 | 26643 | |
friction question
February 9th 2010, 02:58 PM #1
Newbie
Joined
Feb 2010
Posts
4
friction question
1. a block with mass m slides on a horizontal surface. the block is intially at x=0 with velocity v0.
the frictional force that the block experience is proportional to v^(3/2)
such that
F(v)=-k... | 5 | [
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0.0388183593... | 26,644 | 26644 | |
Implicit Relaxed and Hybrid Methods with Regularization for Minimization Problems and Asymptotically Strict Pseudocontractive Mappings in the Intermediate Sense
Abstract and Applied Analysis
Volume 2013 (2013), Article ID 854297, 14 pages
http://dx.doi.org/10.1155/2013/854297
Research Article
Implicit Relaxed and Hyb... | 5 | [
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Interior Point Method for Solving Fuzzy Number Linear Programming Problems Using Linear Ranking Function
Journal of Applied Mathematics
Volume 2013 (2013), Article ID 795098, 9 pages
http://dx.doi.org/10.1155/2013/795098
Research Article
Interior Point Method for Solving Fuzzy Number Linear Programming Problems Using... | 5 | [
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0... | 26,646 | 26646 | |
A Weak Comparison Principle for Reaction-Diffusion Systems
Journal of Function Spaces and Applications
Volume 2012 (2012), Article ID 679465, 30 pages
http://dx.doi.org/10.1155/2012/679465
Research Article
A Weak Comparison Principle for Reaction-Diffusion Systems
Centro de Investigación Operativa, Universidad Migue... | 5 | [
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the encyclopedic entry of unrefinement
TITAN2D is a geoflow simulation software application, intended for geological researchers. It is distributed as free software.
Overview
TITAN2D
is a free software application developed by the Geophysical Mass Flow Group at the
State University of New York (SUNY) at Buffalo
TI... | 4 | [
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Exponential Growth and Decay
June 4th 2010, 01:01 PM
Hockey_Guy14
Exponential Growth and Decay
a) If a boat slows according to an exponential function, and its initial speed was 40km/h, what does the formula need to be if the boat is only going 10km/h and it has been 10 minutes since
letting off the gas? Def... | 4 | [
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-0.0172119140625,
-0.03... | 26,649 | 26649 | |
Subset of A countable Set is countable
October 29th 2008, 05:39 PM #1
Senior Member
Joined
Apr 2008
From
Vermont
Posts
318
Subset of A countable Set is countable
I am trying to prove that any subset of a countable set is countable.
I'm working with the with S being countably infinite right now.
... | 5 | [
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... | 26,650 | 26650 | |
Using the method of u-substitution
July 24th 2010, 05:41 PM
jpratt
Using the method of u-substitution
Using the method of u-substitution,
http://lrc.alasu.edu/webwork2_files/...1731c85f81.png
where
u = 3x-7 (enter a function of x)
du = 3 dx (enter a function of x)
a = 2 (enter a number)
... | 5 | [
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0.0... | 26,651 | 26651 | |
Solve solution set geometrically
December 12th 2010, 05:57 AM
JohnJames
Solve solution set geometrically
x1 - x2 - x3 = 7
x1 - x2 - 2x3 = 2
I know how to solve the problem, but I don't know how to show it geometrically so here is the answer:
$\left(\begin{array}{cc}x1\\x2\\x3\end{array}\right )$ = ... | 5 | [
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-0.083984375,
-0.100097... | 26,652 | 26652 | |
New Jacobi Elliptic Function Solutions for the Zakharov Equations
Journal of Applied Mathematics
Volume 2012 (2012), Article ID 854619, 16 pages
http://dx.doi.org/10.1155/2012/854619
Research Article
New Jacobi Elliptic Function Solutions for the Zakharov Equations
Department of Mathematics, Honghe University, Mengz... | 5 | [
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0.01373291015625,
-0.0874023... | 26,653 | 26653 | |
Life-Cycle Management Strategy on Steel Girders in Bridges
Advances in Civil Engineering
Volume 2012 (2012), Article ID 643543, 14 pages
http://dx.doi.org/10.1155/2012/643543
Research Article
Life-Cycle Management Strategy on Steel Girders in Bridges
^1Faculty of Science and Technology, The Technological and Higher ... | 4 | [
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-0.002349853515625,
0.01129... | 26,654 | 26654 | |
On the Deficiencies of Some Differential-Difference Polynomials
Abstract and Applied Analysis
Volume 2014 (2014), Article ID 378151, 12 pages
http://dx.doi.org/10.1155/2014/378151
Research Article
On the Deficiencies of Some Differential-Difference Polynomials
^1Institute of Mathematics and Information Science, Jian... | 5 | [
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0.01080322265625,
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-0.05615234375,
-0.023... | 26,655 | 26655 | |
Combine the equation into a single logarithm
December 10th 2010, 09:39 PM
SilvaNoctix
Combine the equation into a single logarithm
1/4log˅br + 2log˅bs -2/3log˅bt
i multipled the first two terms and divided the last one from the to get an answer of log˅b r^1/4s^2/t^2
is this the correct approach and ans... | 4 | [
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0.0... | 26,656 | 26656 | |
Frechet Derivative
April 18th 2009, 01:47 PM #1
Member
Joined
Nov 2008
Posts
121
Frechet Derivative
$f:\Re^2\longrightarrow\Re, \;\; f[x,y]^T=x^2y\;\;$
Prove from
$\lim_{\vec{h}\rightarrow 0}<br /> \;=\;\frac{f(\vec{a} + \vec{h})-f(\vec{a})-L(\vec{h})}{|\vec{h}|}=0$ that f is differentiable at a ... | 5 | [
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0.12353515625,
-0.043212890625,
-0... | 26,657 | 26657 | |
System of linear equations with parameters
September 16th 2012, 08:50 AM
Piuzza12
System of linear equations with parameters
Hi,
I am wondering if anyone could help me with this system or linear equations with parameter k. I've tried using reduced row echelon form, but I'm not sure about my answer. This is ... | 5 | [
-0.0625,
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0.0196533... | 26,658 | 26658 | |
99 questions/Solutions/39
From HaskellWiki
< 99 questions | Solutions
(Difference between revisions)
("union" removed, appears on Q.31) (better 4th version)
← Older edit ... | 5 | [
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Analysis of Rattleback Chaotic Oscillations
The Scientific World Journal
Volume 2014 (2014), Article ID 569386, 15 pages
http://dx.doi.org/10.1155/2014/569386
Research Article
Analysis of Rattleback Chaotic Oscillations
^1Department of Electronics, Computers, Telecommunications and Control, Faculty of Physics, Natio... | 4 | [
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Data and Pilot Combining for Composite GNSS Signal Acquisition
International Journal of Navigation and Observation
Volume 2008 (2008), Article ID 738183, 12 pages
http://dx.doi.org/10.1155/2008/738183
Research Article
Data and Pilot Combining for Composite GNSS Signal Acquisition
Dipartimento di Elettronica, Politec... | 4 | [
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Robust Adaptive Tracking Control of a Class of Robot Manipulators with Model Uncertainties
Modelling and Simulation in Engineering
Volume 2012 (2012), Article ID 271705, 7 pages
http://dx.doi.org/10.1155/2012/271705
Research Article
Robust Adaptive Tracking Control of a Class of Robot Manipulators with Model Uncertai... | 4 | [
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0.0152587890... | 26,662 | 26662 | |
Solving Fuzzy Fractional Differential Equations Using Zadeh's Extension Principle
The Scientific World Journal
Volume 2013 (2013), Article ID 454969, 11 pages
http://dx.doi.org/10.1155/2013/454969
Research Article
Solving Fuzzy Fractional Differential Equations Using Zadeh's Extension Principle
^1Institute of Engine... | 5 | [
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Quotients of Univariate Polynomial Rings
Bases: sage.rings.ring.CommutativeRing
Quotient of a univariate polynomial ring by an ideal.
EXAMPLES:
sage: R.<x> = PolynomialRing(Integers(8)); R
Univariate Polynomial Ring in x over Ring of integers modulo 8
sage: S.<xbar> = R.quotient(x^2 + 1); S
... | 5 | [
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Help with hard integral
December 2nd 2009, 04:16 AM #1
Junior Member
Joined
Oct 2008
Posts
65
Help with hard integral
Hello, this is one of my homework problem, and it's pretty difficult, since I have to use arctan, but I can't figure out how to use it here.. And help would be appreciated.
Find the ... | 4 | [
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-0.0... | 26,665 | 26665 | |
MHD Accelerated Flow of Maxwell Fluid in a Porous Medium and Rotating Frame
ISRN Mathematical Physics
Volume 2013 (2013), Article ID 485805, 10 pages
http://dx.doi.org/10.1155/2013/485805
Research Article
MHD Accelerated Flow of Maxwell Fluid in a Porous Medium and Rotating Frame
^1UTM Centre for Industrial and Appl... | 5 | [
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Efficient solution to "risky drivers" problem
April 12th 2008, 06:30 PM #1
Efficient solution to "risky drivers" problem
I have a solution to a practice problem that took me a long time, and doesn't really match any of my multiple choices.
50% of drivers are low-risk, 30% are moderate risk, and 20% are high ... | 4 | [
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2 gravitational problems
November 13th 2008, 05:57 PM #1
2 gravitational problems
A projectile is shot directly away from Earth's surface. Neglect the rotation of the Earth. What multiple of Earth's radius RE gives the radial distance (from the Earth's center) the projectile
reaches if (a) its initial speed i... | 4 | [
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Approximate Symmetries of the Harry Dym Equation
ISRN Mathematical Physics
Volume 2013 (2013), Article ID 109170, 7 pages
http://dx.doi.org/10.1155/2013/109170
Research Article
Approximate Symmetries of the Harry Dym Equation
School of Mathematics, Iran University of Science and Technology, Narmak, Tehran 1684613114... | 5 | [
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Find the minimal polynomial for a = π^2 over Q(π^3)
March 26th 2012, 10:11 AM
lteece89
Find the minimal polynomial for a = π^2 over Q(π^3)
If it were in Q then the polynomial would be p(x) = x - π^2, but I don't know if being over Q(π^3) changes that. I think that when you compare the fields you get degree 1, bu... | 4 | [
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-0.057373046875,
0.00891113281... | 26,670 | 26670 | |
Comparative Analysis of Mathematical Models for Blood Flow in Tapered Constricted Arteries
Abstract and Applied Analysis
Volume 2012 (2012), Article ID 235960, 34 pages
http://dx.doi.org/10.1155/2012/235960
Research Article
Comparative Analysis of Mathematical Models for Blood Flow in Tapered Constricted Arteries
^1... | 5 | [
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-0.01525878906... | 26,671 | 26671 | |
Dosage Calculations!! PLease Help
1. 0
Jul 14, '13 by
Tmarie3030
Hi everyone! I'm taking an online course that has me stressed out to the max! I need some guidance as to how to solve these:
1 g:15 mL expressed as a fraction is ___ g/100 mL.
Medication order: 750 mL of D5W with aminophylli... | 4 | [
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finding quadratic equation, when given 3 points
March 20th 2009, 08:54 PM #1
Newbie
Joined
Mar 2009
Posts
3
hi. i have the answers to these questions, although i really can't seem to work them out. i know you should sub them into the equation y=ax^2+bx+c but when i have the 3 equations i dont know how
... | 4 | [
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-0.... | 26,673 | 26673 | |
The Existence of Solutions for Four-Point Coupled Boundary Value Problems of Fractional Differential Equations at Resonance
Abstract and Applied Analysis
Volume 2014 (2014), Article ID 314083, 8 pages
http://dx.doi.org/10.1155/2014/314083
Research Article
The Existence of Solutions for Four-Point Coupled Boundary Val... | 5 | [
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-0.00738525390... | 26,674 | 26674 | |
Inequality, not very hard but nice olympiad problem
September 1st 2007, 07:32 AM #1
Junior Member
Joined
Sep 2007
Posts
37
Inequality, not very hard but nice olympiad problem
Find the smallest real number $x$, such that: For arbitrary real numbers $a, b, c\geqslant x$ and $a + b + c = 3$ this inequality ... | 4 | [
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-0.01171875,... | 26,675 | 26675 | |
Asymmetric Travelling Salesman Problem - Particular case
November 17th 2011, 02:13 AM #1
Newbie
Joined
Nov 2011
Posts
1
Asymmetric Travelling Salesman Problem - Particular case
Hello,
First of all I would like to inform you that I am an IT professional and not a Maths expert so some of my vocabulary... | 5 | [
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... | 26,676 | 26676 | |
Partial Actions and Power Sets
International Journal of Mathematics and Mathematical Sciences
Volume 2013 (2013), Article ID 376915, 4 pages
http://dx.doi.org/10.1155/2013/376915
Research Article
Partial Actions and Power Sets
^1Departamento de Matemáticas y Estadística, Universidad del Tolima, Ibagué, Colombia
^2De... | 4 | [
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-0.011169433... | 26,677 | 26677 | |
Geometry(2)
December 3rd 2009, 04:14 PM
Drexel28
Geometry(2)
Problem(1): Let $P_n$ be a regular $n$-gon with points $Q_1,\cdots,Q_n$. Fix one point $Q_i\quad 1\le i\le n$ and define $D_k$ as the distance from $Q_k$ to $Q_i$. Evaluate $\prod_{\stackrel{k=1}
{\scriptstyle{k}e i}}^{n}D_k$
Problem(2): What... | 5 | [
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Residue theorem
usind Residue theorem prove that : $\int \frac {d \theta}{ 1+ {sin^2 x}} = \sqrt 2 \pi ,,, -\pi\to \pi$
i using ${sin^2x} = \frac{1-cos2\theta}{2}$ but the answer not the same
First off, I think that you mean $\int_{-\pi}^\pi\frac{d\theta}{1+\sin^2\theta}$. I would suggest try using $u=\tan\left(\frac... | 5 | [
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0.02294921875,
-0.0... | 26,679 | 26679 | |
Partial differentiation
April 4th 2010, 02:42 AM #1
Junior Member
Joined
Sep 2009
Posts
56
Partial differentiation
Suppose that f is a differentiable function of a single variable and $F(x,y)$ is defined by $F(x,y)=f(x^2-y)$.
Show that $F$ satisfies the partial differential equation $\frac{\partial ... | 5 | [
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Mathematical Induction
Hi everyone..i am struggling with this question..Any help would be appreciated Prove by mathematical induction that [img=http://img220.imageshack.us/img220/1937/formula.th.png]
First show that the basis holds: $P\!\left(1\right)\,:\,\sum_{k=1}^1\left(3k^2+3k+1\ right)=7=8-1=\left(1+1\right)^3-1$... | 5 | [
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0.04907226562... | 26,681 | 26681 | |
False positives
October 29th 2013, 04:13 PM #1
False positives
I'm quite happy to answer part 1. of the following problem.
"You are diagnosed with an uncommon disease. You know that there is only a 1% chance of getting it. Let D stand for the event 'you have the disease' and T stand for 'the test says so'. ... | 5 | [
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Econometrics Beat: Dave Giles' Blog
The Devil made me do it! It just had to happen sooner or later, and no one else seemed to be willing to bite the bullet. So, I figured it was up to me. I've written the definitive addition to the
Dummies series
:
O.K., I'm (uncharacteristically) exaggerating just a tad. I think ... | 5 | [
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Use Lagrange multipliers to find the maximum and minimum
February 23rd 2010, 05:25 PM
sammygirl2791
Use Lagrange multipliers to find the maximum and minimum
Use Lagrange multipliers to find the maximum and minimum values of the function subject to the given constraints. (If a value does not exist, enter NONE.)
... | 4 | [
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Sum question
February 1st 2010, 05:20 AM
Henryt999
Sum, not solved yet...
I´m trying to learn something about matematical induction. This chapter starts with sums (Sigma)
There is this easy problem I do not understand.
It says calculate the Sigma: from k=1;to n. where $(1/k-1/(k+1))$
The textbook a... | 4 | [
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Integral of sqrt(1 + e^(2x))
Integral of sqrt(1 + e^(2x)) u = 1 + e^(2x) ?? Please point me in the right direction. Thank you.
\displaystyle \begin{aligned} \int \sqrt{1+e^{2x}}\;{dx} & = \int\frac{\sqrt{1+e^{2x}}\sqrt{1+e^{2x}}}{\sqrt{1+ e^{2x}}}\;{dx} \\&= \int\frac{1+e^{2x}}{\sqrt{1+e^{2x}}}\;{dx} \\& = \int\frac{1... | 5 | [
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Second Law Analysis of a Gas-Liquid Absorption Film
Journal of Thermodynamics
Volume 2013 (2013), Article ID 909162, 10 pages
http://dx.doi.org/10.1155/2013/909162
Research Article
Second Law Analysis of a Gas-Liquid Absorption Film
University of Gabes, Engineers National School, Chemical and Process Engineering Dep... | 4 | [
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A company conducted a survey about its two brands, A and B.
Author Message
TAGS:
A company conducted a survey about its two brands, A and B. [#permalink] 25 Feb 2013, 01:25
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Implicit Differentiation
I am getting the 0, but its not right. What am I doing wrong?????? If
sqrt(x) +sqrt(y) = 7 Differentiate both sides with respect to x, 1/(2sqrt(x)) +[1/(2sqrt(y)](y') = 0 y' = -[1 / 2sqrt(x)] / [1 / 2sqrt(y)] y' = -[1 /sqrt(x)] * [sqrt(y) / 1] y' = -sqrt(y) / sqrt(x)
y' = -sqrt(y/x) y(16) = 9 ... | 5 | [
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How to make a change of basis?
October 5th 2011, 02:40 AM #1
Newbie
Joined
May 2010
Posts
6
How to make a change of basis?
Hi all!
I got a problem, I need to make a change of basis, I have a matrix representation
$T= {ab }\begin{bmatrix} 1 & 0 & 0 \\ 0 & 2 &0 \\ 0 & 0 & 3 \end{bmatrix}$ in the ... | 5 | [
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Having difficulty with a proof - distance from a point to a line
June 6th 2010, 05:52 AM #1
Member
Joined
Sep 2009
Posts
83
Having difficulty with a proof - distance from a point to a line
Hey!
I am having trouble proving something, and I was hoping someone here could help me out!
Question
... | 4 | [
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Number theory(Primes)
September 8th 2009, 05:02 PM
manusform
Number theory(Primes)
*Determine whether the following assertions are true or false. if true, prove the result, and if false, give a counter example
2. If p is a prime and p/(a^2+b^2) and p/(b^2+c^2) then p/(a^2-c^2).
September 8th 2009, 05:08 PM... | 4 | [
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Area of a polygon on the unit circle
April 5th 2011, 10:41 PM #1
Newbie
Joined
Feb 2011
Posts
24
Area of a polygon on the unit circle
I'm having a hard time solving this problem:
Find the area of a regular dodecagon whos vertices are 12 equally spaced points on the unit circle.
what i did was sp... | 4 | [
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An Algebraic Method on the Eigenvalues and Stability of Delayed Reaction-Diffusion Systems
Discrete Dynamics in Nature and Society
Volume 2013 (2013), Article ID 412343, 7 pages
http://dx.doi.org/10.1155/2013/412343
Research Article
An Algebraic Method on the Eigenvalues and Stability of Delayed Reaction-Diffusion Sy... | 5 | [
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physics related calc
October 15th 2007, 05:51 PM #1
Junior Member
Joined
Sep 2007
Posts
39
physics related calc
Well I am once again at a stand still. Its basically a simple circuit problem, but not so simple to me. Heres where im at:
e^(t/RC) q = CV e^(t/RC) + K
All letters in capital are cons... | 5 | [
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Self-Consistent Sources and Conservation Laws for Nonlinear Integrable Couplings of the Li Soliton Hierarchy
Abstract and Applied Analysis
Volume 2013 (2013), Article ID 598570, 10 pages
http://dx.doi.org/10.1155/2013/598570
Research Article
Self-Consistent Sources and Conservation Laws for Nonlinear Integrable Coupl... | 4 | [
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Couple of the Variational Iteration Method and Legendre Wavelets for Nonlinear Partial Differential Equations
Journal of Applied Mathematics
Volume 2013 (2013), Article ID 157956, 11 pages
http://dx.doi.org/10.1155/2013/157956
Research Article
Couple of the Variational Iteration Method and Legendre Wavelets for Nonli... | 5 | [
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The Learning Rates of Regularized Regression Based on Reproducing Kernel Banach Spaces
Abstract and Applied Analysis
Volume 2013 (2013), Article ID 694181, 10 pages
http://dx.doi.org/10.1155/2013/694181
Research Article
The Learning Rates of Regularized Regression Based on Reproducing Kernel Banach Spaces
^1Departme... | 4 | [
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it is really imp plz solve
February 28th 2006, 01:17 AM
bharathlece
it is really imp plz solve
A+B+C+D=D+E+F+G=G+H+I=17 where each letter represent a number from 1 to 9. Find
out what does letter D and G represent if letter A=4
February 28th 2006, 02:12 AM
ticbol
Quote:
Originally Posted by bhar... | 4 | [
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