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200
202
For the function $f(x)=|x+1|-|x-2|$ on which interval is it strictly increasing?
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$(-\infty, 2)$
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$(-1, +\infty)$
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(-1, 2)
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$(2, +\infty)$
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3
Konkour_EN
en
konkour
201
203
For the function $f(x)=x|x|-2x$, what is the distance between the points of its relative maximum and relative minimum?
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$2\sqrt{2}$
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3
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$3\sqrt{2}$
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4
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1
Konkour_EN
en
konkour
202
204
What is the solution set of the inequality $-1<\frac{2x-1}{x+1}<3$?
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$(0, +\infty)$
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$(4, +\infty)$
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$\mathbb{R}-[-4, 0]$
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$\mathbb{R}-[-4, -1]$
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3
Konkour_EN
en
konkour
203
205
The graph of the function $f(x)=x^2-2x; (x>1)$ is given. Its reflection with respect to the $x$-axis is then shifted 16 units upward along the $y$-axis. What is the distance from the origin to the intersection point of the resulting curve with the graph of $f$?
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$4\sqrt{5}$
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$6\sqrt{2}$
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$5\sqrt{2}$
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$2\sqrt{5}$
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1
Konkour_EN
en
konkour
204
206
On the interval $(a,b)$, the graph of $y=(x-1)^2$ lies above the graph of $y=4x^4$. What is the greatest possible value of $b-a$?
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1
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$\frac{3}{2}$
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2
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$\frac{5}{2}$
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2
Konkour_EN
en
konkour
205
207
If $f(x)=\lfloor x\rfloor-x$ and $g(x)=\frac{1-2x}{x+1}$, what is the range of the function $g\circ f$? (Here \(\lfloor\ \rfloor\) denotes the greatest-integer (floor) function.)
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[-1, 1)
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(-1, 1]
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$[1, +\infty)$
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$(-\infty, 1]$
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3
Konkour_EN
en
konkour
206
208
Let $f(x)=x-\frac{1}{{2x}}$, defined on $(0,+\infty)$. At what x-coordinate does the graph of $f^{-1}$ intersect the bisector of the second quadrant?
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$-\frac{3}{2}$
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$-\frac{3}{4}$
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-1
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$-\frac{1}{2}$
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4
Konkour_EN
en
konkour
207
209
How many solutions does the trigonometric equation $4\sin(3x)\cos(3x)=1$ have in the interval $[0,\frac{\pi}{2}]$?
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2
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3
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4
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5
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3
Konkour_EN
en
konkour
208
210
What is the value of the relative maximum of the function $f(x)=\frac{x^2+2x-3}{x^2+1}$?
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$-1+\sqrt{5}$
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$1+\sqrt{5}$
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$-1+\sqrt{3}$
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$1+\sqrt{3}$
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1
Konkour_EN
en
konkour
209
211
What is the shortest distance from the point $A(5,0)$ to the curve $y=\sqrt{2x+7}$?
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4
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4.5
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5
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$3\sqrt{2}$
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1
Konkour_EN
en
konkour
210
212
How many solutions does the trigonometric equation $5\sin^2(x)+2\cos(3x)=-2$ have on the interval $[-\pi,\pi]$?
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1
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2
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5
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7
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2
Konkour_EN
en
konkour
211
213
What is the domain of the function $f(x)=\log_{4}(|x^2-2|-x)$?
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$(-\infty,-\sqrt{2})\cup(2,+\infty)$
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$(-\infty,1)\cup(\sqrt{2},+\infty)$
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$[-1,1)\cup(\sqrt{2},+\infty)$
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$(-\infty,1)\cup(2,+\infty)$
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4
Konkour_EN
en
konkour
212
214
Suppose $M$ is the point of intersection of the curve $y=\sqrt{x+3}-1$ with its inverse function. What is the distance from point $M$ to the origin?
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$\frac{\sqrt{2}}{2}$
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$\sqrt{2}$
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3
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$2\sqrt{2}$
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2
Konkour_EN
en
konkour
213
215
What is the absolute minimum of the function $f(x)=x|3-x^2|$ on the interval $\left[-1.5,\sqrt{3}\right]$?
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$-\frac{9}{4}$
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-2
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$-\sqrt{3}$
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$-\frac{9}{8}$
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2
Konkour_EN
en
konkour
214
216
What is the shortest distance from the point $M(3,0)$ to the parabola $y^2=4x$?
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$\sqrt{2}$
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$\frac{3}{2}$
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$2\sqrt{2}$
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3
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3
Konkour_EN
en
konkour
215
217
How many positive roots does the equation $\frac{1}{\sqrt{2-x}+2}-\frac{1}{2-\sqrt{2-x}}=\frac{2-x}{5\sqrt{2-x}}$ have?
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0
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1
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2
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3
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1
Konkour_EN
en
konkour
216
218
Which point does the inverse of the function $y=-3x^3+2x-11$ pass through?
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(9, -2)
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(2, -31)
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(-1, 10)
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(-12, -1)
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1
Konkour_EN
en
konkour
217
219
How many solutions does the equation $\sin\left(x+\frac{\pi}{6}\right)\cos\left(x-\frac{\pi}{3}\right)=1$ have on the interval $[0,2\pi]$?
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1
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2
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3
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4
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2
Konkour_EN
en
konkour