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25
omr-ws-9c93c20fb845d21db29c8c24ac0e1f00911261ca182c82379a12089b4a0d37f3
Calculate $$ \lim_{x\to\ -1} \frac{n-\arccos x} {\sqrt{1+x}}, \forall n\in \mathbb{N}^{*}.$$
[ "+\\infty" ]
[ "Calculate $$ \\lim_{x\\to\\ -1} \\frac{n-\\arccos x} {\\sqrt{1+x}}, \\forall n\\in \\mathbb{N}^{*}.$$" ]
[ "aops_c6_high_school_olympiads" ]
[ "cot" ]
{ "cot": 8 }
8
0
0
omr-ws-b697b0c04efa6a4ac2590a8b085c6be3e44749300972bbfe66843ea747fc452c
Calculate $$(2+ \sqrt{3})^3 (3- \sqrt{2})^4 + (2 - \sqrt{2})^3(3+ \sqrt{2})^4$$
[ "\\(9836 - 30\\sqrt{6}\\)" ]
[ "Calculate $$(2+ \\sqrt{3})^3 (3- \\sqrt{2})^4 + (2 - \\sqrt{2})^3(3+ \\sqrt{2})^4$$" ]
[ "aops_c4_high_school_math" ]
[ "additional_problems" ]
{ "additional_problems": 1 }
1
0
0
omr-ws-ad7f6298a358058d7e021b1fcdd7b661cde696a093815e574f3250c5da0ea9e9
Calculate $$(f^{2^{2023}})^{(100)}(3) \mod (2^{89}-1)$$ where $f(x)=\dfrac{x^2-x}{2}$, $g^{2}=g\circ g$, and $g^{(2)}=g''$.
[ "0" ]
[ "Calculate $$(f^{2^{2023}})^{(100)}(3) \\mod (2^{89}-1)$$ where $f(x)=\\dfrac{x^2-x}{2}$, $g^{2}=g\\circ g$, and $g^{(2)}=g''$." ]
[ "aops_c6_high_school_olympiads" ]
[ "cot" ]
{ "cot": 11 }
11
0
0
omr-ws-2c93e8f79c64a56468390529e3e2e266ba1a635bae7a5089bd3dc371ba708fc1
Calculate $$(f^{2^{2023}})^{(2^{2023})}(3) \mod (2^{89}-1)$$ where $f(x)=\dfrac{x^2-x}{2}$, $g^{2}=g\circ g$, and $g^{(2)}=g''$.
[ "0" ]
[ "Calculate $$(f^{2^{2023}})^{(2^{2023})}(3) \\mod (2^{89}-1)$$ where $f(x)=\\dfrac{x^2-x}{2}$, $g^{2}=g\\circ g$, and $g^{(2)}=g''$." ]
[ "aops_c6_high_school_olympiads" ]
[ "cot", "genselect" ]
{ "cot": 14, "genselect": 8 }
22
0
0
omr-ws-034345e960d4e44162682f59793e0a3ae1ae030e88d8a7b20314f72913ea2733
Calculate $$L = \lim _{n \rightarrow \infty} \int _0 ^1 \left( \frac{k}{\sqrt[n]{x} +k -1} \right)^n dx$$
[ "\\(\\frac{k}{k-1}\\)" ]
[ "Calculate\n$$L = \\lim _{n \\rightarrow \\infty} \\int _0 ^1 \\left( \\frac{k}{\\sqrt[n]{x} +k -1} \\right)^n dx$$" ]
[ "aops_c7_college_math" ]
[ "cot", "tir" ]
{ "cot": 16, "tir": 16 }
32
0
0
omr-ws-e05dc53e2474deb183b08a76cd220709c476e680ec2a84476c750e0c9d58a156
Calculate $$U=\sum \limits _{k \geq 1,\gcd(k,30)=1} \dfrac {1}{k^2}.$$
[ "\\(\\frac{8\\pi^2}{75}\\)" ]
[ "Calculate $$U=\\sum \\limits _{k \\geq 1,\\gcd(k,30)=1} \\dfrac {1}{k^2}.$$" ]
[ "aops_c6_high_school_olympiads" ]
[ "cot", "tir" ]
{ "cot": 16, "tir": 30 }
46
0
0
omr-ws-c7388eef5efc330e616c14fb0f3bb2668911e57d8a3b6ae1756fb0c0ae8b8e54
Calculate $$\cot^4\frac{\pi}{7}+\cot^4\frac{2\pi}{7}+\cot^4 \frac{3 \pi}{7}$$
[ "19" ]
[ "Calculate $$\\cot^4\\frac{\\pi}{7}+\\cot^4\\frac{2\\pi}{7}+\\cot^4 \\frac{3 \\pi}{7}$$" ]
[ "aops_c4_high_school_math" ]
[ "cot", "tir" ]
{ "cot": 15, "tir": 12 }
27
0
0
omr-ws-4b500ecf03016c8358808f4df780f9416a6aed5a60e8e38890f6c9f6774fbc1d
Calculate $$\iiint_V \left(x^2+y^2+z^2 \right) dxdydz,$$ where $V$ is defined by the conditions $1 \le x^2+y^2+z^2 \le 4$ and $x^2+y^2 \le z^2$.
[ "\\dfrac{62\\pi}{5} \\left(2 - \\sqrt{2}\\right)" ]
[ "Calculate\n$$\\iiint_V \\left(x^2+y^2+z^2 \\right) dxdydz,$$\nwhere $V$ is defined by the conditions $1 \\le x^2+y^2+z^2 \\le 4$ and $x^2+y^2 \\le z^2$." ]
[ "aops_c7_college_math" ]
[ "cot" ]
{ "cot": 16 }
16
0
0
omr-ws-67771432ae7e2571fc97ca7ef58913d8b45d1f36d9d5ba33a6ab5a523d5ae040
Calculate $$\iiint_V\frac{xyz}{x^2+y^2}\,dxdydz,$$ where $V$ is the domain bounded by the surface $(x^2+y^2+z^2)^2=a^2xy$ and the plane $z=0$.
[ "\\dfrac{a^4}{144}" ]
[ "Calculate \n$$\\iiint_V\\frac{xyz}{x^2+y^2}\\,dxdydz,$$\nwhere $V$ is the domain bounded by the surface $(x^2+y^2+z^2)^2=a^2xy$ and the plane $z=0$." ]
[ "aops_c7_college_math" ]
[ "cot" ]
{ "cot": 15 }
15
0
0
omr-ws-ff93416a72902eaa789bca558759a5e1dc55d7064991b28acaa56ed843c861d2
Calculate $$\int_{0}^{1}\frac{\ln(x)\ln(1-x)}{1+x^{2}}dx$$ where $Li_{k}(x)=\sum_{n=1}^{+\infty}\frac{x^{n}}{n^{k}}$ is the Polylogarithm function for $|x|\leq 1$ and $k \geq 2$.
[ "\\frac{\\pi^3}{64} - \\frac{1}{2}G\\ln 2" ]
[ "Calculate $$\\int_{0}^{1}\\frac{\\ln(x)\\ln(1-x)}{1+x^{2}}dx$$ where $Li_{k}(x)=\\sum_{n=1}^{+\\infty}\\frac{x^{n}}{n^{k}}$ is the Polylogarithm function for $|x|\\leq 1$ and $k \\geq 2$." ]
[ "aops_c7_college_math" ]
[ "cot", "genselect" ]
{ "cot": 5, "genselect": 5 }
10
0
0
omr-ws-8b2d246037e5e64e71e0e380e345d1d788b5595ba3a4e5216a4d18206c478565
Calculate $$\left \lfloor{\sqrt{1}} \right \rfloor + \left \lfloor{\sqrt{2}} \right \rfloor + \left \lfloor{\sqrt{3}} \right \rfloor + \dots + \left \lfloor{\sqrt{2021}} \right \rfloor .$$
[ "59598" ]
[ "Calculate $$\\left \\lfloor{\\sqrt{1}} \\right \\rfloor + \\left \\lfloor{\\sqrt{2}} \\right \\rfloor + \\left \\lfloor{\\sqrt{3}} \\right \\rfloor + \\dots + \\left \\lfloor{\\sqrt{2021}} \\right \\rfloor .$$" ]
[ "aops_c4_high_school_math" ]
[ "cot", "tir" ]
{ "cot": 16, "tir": 29 }
45
0
0
omr-ws-084f9783d3998540f081a40561bc6932bf66f97e033504328f640724a4832e77
Calculate $$\left( \frac{1}{2015} + \frac{2}{2015} \right) + \left( \frac{2}{2015} + \frac{3}{2015} \right) + \left( \frac{3}{2015} + \frac{4}{2015} \right) + \cdots + \left( \frac{2013}{2015} + \frac{2014}{2015} \right).$$
[ "2013" ]
[ "Calculate $$\\left( \\frac{1}{2015} + \\frac{2}{2015} \\right) + \\left( \\frac{2}{2015} + \\frac{3}{2015} \\right) + \\left( \\frac{3}{2015} + \\frac{4}{2015} \\right) + \\cdots + \\left( \\frac{2013}{2015} + \\frac{2014}{2015} \\right).$$" ]
[ "aops_c4_high_school_math" ]
[ "cot" ]
{ "cot": 15 }
15
0
0
omr-ws-fbbf8b2e7afe3c2ee757f03d69f24e8f4fcf48dba68bbc2be6085fb96aae705f
Calculate $$\lim \limits_{n\to \infty}\sqrt[n]{\int \limits_0^1 \left(1+\frac{a_1x+a_3x^3+\cdots+a_{2n-1}x^{2n-1}}{n} \right)^ndx}$$ where $\left(a_n\right)_{n\geq1}$ is a sequence of nonnegative real numbers which converges to $a \in \mathbb{R}$.
[ "1 + a" ]
[ "Calculate $$\\lim \\limits_{n\\to \\infty}\\sqrt[n]{\\int \\limits_0^1 \\left(1+\\frac{a_1x+a_3x^3+\\cdots+a_{2n-1}x^{2n-1}}{n} \\right)^ndx}$$ where $\\left(a_n\\right)_{n\\geq1}$ is a sequence of nonnegative real numbers which converges to $a \\in \\mathbb{R}$." ]
[ "aops_c7_college_math" ]
[ "cot", "genselect" ]
{ "cot": 8, "genselect": 6 }
14
0
0
omr-ws-bc619340d460fa42df4e7394c68e0088e94c3ffb701ee184cd22c32e49b72f1b
Calculate $$\lim \limits_{n\to \infty}\sqrt[n]{\int \limits_0^1 \left(1+a_nx^n \right)^ndx}$$ where $\left(a_n\right)_{n\geq1}$ is a sequence of nonnegative real numbers which converges to $a \in \mathbb{R}$.
[ "1 + a" ]
[ "Calculate $$\\lim \\limits_{n\\to \\infty}\\sqrt[n]{\\int \\limits_0^1 \\left(1+a_nx^n \\right)^ndx}$$ where $\\left(a_n\\right)_{n\\geq1}$ is a sequence of nonnegative real numbers which converges to $a \\in \\mathbb{R}$." ]
[ "aops_c7_college_math" ]
[ "cot" ]
{ "cot": 16 }
16
0
0
omr-ws-82b220f389313538491bf0a4e959a80efe817a14235a13912186cbe874c7956b
Calculate $$\lim _{n \rightarrow \infty} n \left[ L - \int _0 ^1 \left( \frac{k}{\sqrt[n]{x} + k -1} \right) ^n dx \right]$$ where $$L = \frac{k}{k-1}.$$
[ "\\(\\frac{k}{(k-1)^2}\\)" ]
[ "Calculate\n$$\\lim _{n \\rightarrow \\infty} n \\left[ L - \\int _0 ^1 \\left( \\frac{k}{\\sqrt[n]{x} + k -1} \\right) ^n dx \\right]$$\nwhere\n$$L = \\frac{k}{k-1}.$$" ]
[ "aops_c7_college_math" ]
[ "cot", "genselect", "tir" ]
{ "cot": 9, "genselect": 3, "tir": 10 }
22
0
0
omr-ws-6b7a6dad4f4950e00ce201bea45f4677bc3273136b90d281a9933690add77c33
Calculate $$\lim\limits_{n\to+\infty} \frac{n! e^n}{n^n}$$
[ "\\(\\infty\\)" ]
[ "Calculate $$\\lim\\limits_{n\\to+\\infty} \\frac{n! e^n}{n^n}$$" ]
[ "aops_c7_college_math" ]
[ "cot", "tir" ]
{ "cot": 16, "tir": 27 }
43
0
0
omr-ws-4d9d38124f9e8b16a3033880bb826b8421db39807f7e606ae60444753ac54ba6
Calculate $$\lim\limits_{n\to+\infty} \frac{n^n}{n! e^n}$$
[ "0" ]
[ "Calculate $$\\lim\\limits_{n\\to+\\infty} \\frac{n^n}{n! e^n}$$" ]
[ "aops_c7_college_math" ]
[ "cot" ]
{ "cot": 16 }
16
0
0
omr-ws-b82f3743c056fd13c45d1f45f748a18461eccc4fc65fa8fe003346974ad69316
Calculate $$\lim_{n \to \infty} (n!)^{1/n}.$$
[ "\\(\\infty\\)" ]
[ "Calculate $$\\lim_{n \\to \\infty} (n!)^{1/n}.$$" ]
[ "aops_c7_college_math" ]
[ "cot", "tir" ]
{ "cot": 16, "tir": 31 }
47
0
0
omr-ws-b59265fbcabeb8c4a5e735b6d62eb777fe0b550c1b5b9ffc031aa87ae7a8b953
Calculate $$\lim_{n \to \infty} \frac{1}{n}(n!)^{1/n}.$$
[ "\\(\\frac{1}{e}\\)" ]
[ "Calculate $$\\lim_{n \\to \\infty} \\frac{1}{n}(n!)^{1/n}.$$" ]
[ "aops_c7_college_math", "c7_college_math" ]
[ "cot", "tir" ]
{ "cot": 16, "tir": 32 }
48
0
0
omr-ws-2d6c462d2581807041f36b01939004968d9375d3d64894195d82ef427fc00b9c
Calculate $$\lim_{n \to \infty} \int_0 ^1 \frac{(1-x^n)^3}{(1+x^3)^n}dx.$$
[ "0" ]
[ "Calculate $$\\lim_{n \\to \\infty} \\int_0 ^1 \\frac{(1-x^n)^3}{(1+x^3)^n}dx.$$" ]
[ "aops_c7_college_math" ]
[ "cot" ]
{ "cot": 16 }
16
0
0
omr-ws-e18ddb0dfb98685c18615512347e0128f6157586bc1bdf07ac29a7bf1ba0332b
Calculate $$\lim_{n \to \infty}\sup B_{n} \text{ and } \lim_{n\to \infty}\inf B_{n}, \quad \text{where} \quad B_{n}=(-\infty,b_{n}], \quad b_{2n}=1+\frac{1}{2n}, \quad b_{2n-1}=-1-\frac{1}{2n+1}.$$
[ "$\\liminf B_n = (-\\infty, -1)$, $\\limsup B_n = (-\\infty, 1]$" ]
[ "Calculate $$\\lim_{n \\to \\infty}\\sup B_{n} \\text{ and } \\lim_{n\\to \\infty}\\inf B_{n}, \\quad \\text{where} \\quad B_{n}=(-\\infty,b_{n}], \\quad b_{2n}=1+\\frac{1}{2n}, \\quad b_{2n-1}=-1-\\frac{1}{2n+1}.$$" ]
[ "aops_c7_college_math" ]
[ "tir" ]
{ "tir": 10 }
10
0
0
omr-ws-5b005e328653e64f5a3f8d78e58dbda90f9da4cfe791859b3ad71aebf259ee6d
Calculate $$\lim_{n\rightarrow \infty }\sum_{k=1}^{n }\frac{1}{n+k+b+\sqrt{n^2+kn+a}}$$ where $a$ and $b$ are two nonnegative real numbers.
[ "\\(2 \\ln \\frac{1+\\sqrt2}{2}\\)" ]
[ "Calculate\n$$\\lim_{n\\rightarrow \\infty }\\sum_{k=1}^{n }\\frac{1}{n+k+b+\\sqrt{n^2+kn+a}}$$\nwhere $a$ and $b$ are two nonnegative real numbers." ]
[ "aops_c7_college_math" ]
[ "cot", "tir" ]
{ "cot": 16, "tir": 17 }
33
0
0
omr-ws-df3bb0f8371da1a3c90006eec824f5ff66818060a62da51b179453df98f492e5
Calculate $$\lim_{n\to \infty} \sin(a\sqrt{4n^{2}+5n+1}),$$ where $a\in\mathbb{R}$ and $n\in \mathbb{Z}^{+}.$
[ "\\(\\sin \\left( \\frac{5a}{4} \\right)\\) if \\( a \\equiv 0 (\\pi) \\), otherwise the limit does not exist." ]
[ "Calculate $$\\lim_{n\\to \\infty} \\sin(a\\sqrt{4n^{2}+5n+1}),$$ where $a\\in\\mathbb{R}$ and $n\\in \\mathbb{Z}^{+}.$" ]
[ "aops_c7_college_math" ]
[ "tir" ]
{ "tir": 14 }
14
0
0
omr-ws-cde4d35e06f44e2e885f96821608df1a9a260a939a44927121cdbdaf083d6e5e
Calculate $$\lim_{n\to \infty}\sup A_{n} \text{ and } \lim_{n\to \infty} \inf A_{n}, \quad \text{where} \quad A_{n}=p_{n}\mathbb{N}, \quad (p_{n})_{n=1}^{\infty} \quad \text{is the sequence of primes}.$$
[ "\\(\\liminf A_{n} = \\emptyset, \\limsup A_{n} = \\emptyset\\)." ]
[ "Calculate $$\\lim_{n\\to \\infty}\\sup A_{n} \\text{ and } \\lim_{n\\to \\infty} \\inf A_{n}, \\quad \\text{where} \\quad A_{n}=p_{n}\\mathbb{N}, \\quad (p_{n})_{n=1}^{\\infty} \\quad \\text{is the sequence of primes}.$$" ]
[ "aops_c7_college_math", "c7_college_math" ]
[ "cot", "tir" ]
{ "cot": 15, "tir": 27 }
42
0
0
omr-ws-08659199dc5feb57a4f8af893a51edb4c8982f21a210b59fde7d4096915a96a0
Calculate $$\lim_{n\to \infty}\sup C_{n} \text{ and } \lim_{n\to \infty}\inf C_{n}, \quad \text{where} \quad C_{2n}=\left[0,3+\frac{1}{3n}\right), \quad C_{2n+1}=\left(-1-\frac{1}{3n},2\right].$$
[ "$\\lim_{n\\to \\infty}\\sup C_{n} = [-1,3], \\lim_{n\\to \\infty}\\inf C_{n} = [0,2]$." ]
[ "Calculate $$\\lim_{n\\to \\infty}\\sup C_{n} \\text{ and } \\lim_{n\\to \\infty}\\inf C_{n}, \\quad \\text{where} \\quad C_{2n}=\\left[0,3+\\frac{1}{3n}\\right), \\quad C_{2n+1}=\\left(-1-\\frac{1}{3n},2\\right].$$" ]
[ "aops_c7_college_math" ]
[ "tir" ]
{ "tir": 2 }
2
0
0
omr-ws-a1a680feff1147afd324501cd0eabf15184dcbc9385921b1ed84042f5b8b0316
Calculate $$\lim_{n\to\infty}\int_1^2\sqrt[n]{\lfloor x^n\rfloor}\,dx$$ where $\lfloor x\rfloor$ denotes the floor of $x\in\mathbb{R}$.
[ "\\(\\frac{3}{2}\\)" ]
[ "Calculate $$\\lim_{n\\to\\infty}\\int_1^2\\sqrt[n]{\\lfloor x^n\\rfloor}\\,dx$$ where $\\lfloor x\\rfloor$ denotes the floor of $x\\in\\mathbb{R}$." ]
[ "aops_c7_college_math", "c7_college_math" ]
[ "cot", "tir" ]
{ "cot": 16, "tir": 24 }
40
0
0
omr-ws-b2e378aa39f08b48902efd06afd0edc7eada08c8e4e35ccf988d34364cfddbcd
Calculate $$\lim_{n\to\infty}\left(\sqrt[n+1]{\Gamma\left(\frac{(n+1)a+1}a\right)}-\sqrt[n]{\Gamma\left(\frac{na+1}a\right)}\right),$$ where $\Gamma$ is the Euler gamma function and $a \geq 1$ is an integer.
[ "\\dfrac{1}{e}" ]
[ "Calculate\n$$\\lim_{n\\to\\infty}\\left(\\sqrt[n+1]{\\Gamma\\left(\\frac{(n+1)a+1}a\\right)}-\\sqrt[n]{\\Gamma\\left(\\frac{na+1}a\\right)}\\right),$$\nwhere $\\Gamma$ is the Euler gamma function and $a \\geq 1$ is an integer." ]
[ "aops_c7_college_math" ]
[ "cot" ]
{ "cot": 16 }
16
0
0
omr-ws-2b19907f4778bd904c0922ea0445392c40c26fb8e15078635cc2d45e06d102ca
Calculate $$\lim_{n\to\infty}{\sqrt n\cdot\int_{0}^{\frac{\pi}2}{\sqrt{a\sin^{2n}{x}+b\cos^{2n}{x}}\cdot dx}}$$ where \(a, b \geq 0\).
[ "\\((\\sqrt{a}+\\sqrt{b})\\sqrt{\\frac{\\pi}{2}}\\)" ]
[ "Calculate\n$$\\lim_{n\\to\\infty}{\\sqrt n\\cdot\\int_{0}^{\\frac{\\pi}2}{\\sqrt{a\\sin^{2n}{x}+b\\cos^{2n}{x}}\\cdot dx}}$$\nwhere \\(a, b \\geq 0\\)." ]
[ "aops_c7_college_math" ]
[ "cot", "tir" ]
{ "cot": 16, "tir": 25 }
41
0
0
omr-ws-801d31619daadce0bb6601da282f05684c371f7eba680e14718f19662ae25cf4
Calculate $$\lim_{x \to a}\frac{x^{x^a}-a^{a^a}}{x-a}$$
[ "\\( a^{a^a + a - 1}(a \\ln(a) + 1) \\)" ]
[ "Calculate $$\\lim_{x \\to a}\\frac{x^{x^a}-a^{a^a}}{x-a}$$" ]
[ "aops_c7_college_math" ]
[ "cot", "tir" ]
{ "cot": 16, "tir": 28 }
44
0
0
omr-ws-7c6c82b99dd381067eb7d4521724ac37b83e4e2901729bea923b35a437e137fb
Calculate $$\lim_{x\to 1^{-}} \frac {\cos^{-1} x^{n+1}}{\cos^{-1} x^{n}}$$
[ "\\(\\sqrt{\\frac{n+1}{n}}\\)" ]
[ "Calculate\n$$\\lim_{x\\to 1^{-}} \\frac {\\cos^{-1} x^{n+1}}{\\cos^{-1} x^{n}}$$" ]
[ "aops_c7_college_math" ]
[ "cot", "tir" ]
{ "cot": 16, "tir": 30 }
46
0
0
omr-ws-3632d082fc5e1dd7d48269819ad8e4a41e33fed55d7551bf9bdf6061b71bbc84
Calculate $$\lim_{x\to\infty} (a^x+b^x)^{1/x}$$
[ "a" ]
[ "Calculate\n$$\\lim_{x\\to\\infty} (a^x+b^x)^{1/x}$$" ]
[ "aops_c7_college_math" ]
[ "additional_problems" ]
{ "additional_problems": 1 }
1
0
0
omr-ws-2a656a684bafe1031920ceb138418fad44d11176ef8658603aa72163a7e9f79a
Calculate $$\sum \limits_{n=1}^{\infty} \left(n+\frac{1}{4}-\zeta(3)-\zeta(5)-\cdots -\zeta(2n+1)\right).$$
[ "\\(\\frac{1}{16}\\)" ]
[ "Calculate $$\\sum \\limits_{n=1}^{\\infty} \\left(n+\\frac{1}{4}-\\zeta(3)-\\zeta(5)-\\cdots -\\zeta(2n+1)\\right).$$" ]
[ "aops_c7_college_math", "c7_college_math" ]
[ "cot", "genselect", "tir" ]
{ "cot": 12, "genselect": 7, "tir": 28 }
47
0
0
omr-ws-616c976de99a8cfa65dec97655461827ca2a073547d1248135ce975deb8ebd95
Calculate $$\sum\limits_{k=0}^{n} \Bigg((-1)^k\cdot \begin{pmatrix}n \\ k \end{pmatrix} \cdot k^{n+2}\Bigg).$$
[ "(-1)^n \\cdot \\dfrac{n! \\cdot n(n + 1)(n + 2)(3n + 1)}{24}" ]
[ "Calculate \n$$\\sum\\limits_{k=0}^{n} \\Bigg((-1)^k\\cdot \\begin{pmatrix}n \\\\ k \\end{pmatrix} \\cdot k^{n+2}\\Bigg).$$" ]
[ "aops_c6_high_school_olympiads" ]
[ "cot" ]
{ "cot": 16 }
16
0
0
omr-ws-7e3229fcca8a003c4739ffa56073c5e1131a155c099db8b7664fdaed35eb4960
Calculate $$\sum_{d|16!,d>0}\frac{\sqrt{16!}}{d+\sqrt{16!}}$$
[ "3360" ]
[ "Calculate $$\\sum_{d|16!,d>0}\\frac{\\sqrt{16!}}{d+\\sqrt{16!}}$$" ]
[ "aops_c6_high_school_olympiads" ]
[ "additional_problems" ]
{ "additional_problems": 1 }
1
0
0
omr-ws-cf72ab7f15eb27e3b14c52d26f2038f325dcf7fac1330ace4b3aaa09631917d8
Calculate $$\sum_{j=0}^{n}\left( {n \choose j}\left( \sum_{i=0}^{n} {j \choose i}8^i\right)\right)$$
[ "\\(10^n\\)" ]
[ "Calculate $$\\sum_{j=0}^{n}\\left( {n \\choose j}\\left( \\sum_{i=0}^{n} {j \\choose i}8^i\\right)\\right)$$" ]
[ "aops_c4_high_school_math" ]
[ "cot", "tir" ]
{ "cot": 16, "tir": 1 }
17
0
0
omr-ws-588d584c331589beb7dda041902a1317151331cb30f91eff407f4434f7073dc5
Calculate $$\sum_{k=1}^{2016}\frac{k^2+k+1}{(k+1)!}-\sum_{k=1}^{2017}(-1)^k\cdot \frac{k^2+k+1}{k!}.$$
[ "1" ]
[ "Calculate $$\\sum_{k=1}^{2016}\\frac{k^2+k+1}{(k+1)!}-\\sum_{k=1}^{2017}(-1)^k\\cdot \\frac{k^2+k+1}{k!}.$$" ]
[ "aops_c4_high_school_math" ]
[ "cot" ]
{ "cot": 3 }
3
0
0
omr-ws-73eb750590b58a37e26752f4979c968669551728cfe9d780d3de9ac45e3f4c50
Calculate $(-1)^{(e+\pi)}$.
[ "\\(\\cos((e+\\pi)\\pi) + i\\sin((e+\\pi)\\pi)\\)" ]
[ "Calculate $(-1)^{(e+\\pi)}$." ]
[ "aops_c6_high_school_olympiads" ]
[ "cot", "genselect", "tir" ]
{ "cot": 15, "genselect": 8, "tir": 4 }
27
0
0
omr-ws-a0d4027dff1e0064f4636ac69b336289e3f4f85c438a04bd6d31101c405e2a93
Calculate $(-1)^{(i+\pi)}$.
[ "\\( e^{-\\pi} \\cdot (\\cos(\\pi^2) + i\\sin(\\pi^2)) \\)" ]
[ "Calculate $(-1)^{(i+\\pi)}$." ]
[ "aops_c6_high_school_olympiads" ]
[ "cot", "tir" ]
{ "cot": 48, "tir": 13 }
61
0
0
omr-ws-859238d7fc5da1e013b79e1663ff08c2db0102f6ecaf1c023e2cedb06e727015
Calculate $(-1)^{(i+e)}$.
[ "\\( e^{-\\pi} \\left( \\cos(\\pi e) + i \\sin(\\pi e) \\right) \\)" ]
[ "Calculate $(-1)^{(i+e)}$." ]
[ "aops_c6_high_school_olympiads" ]
[ "cot", "tir" ]
{ "cot": 16, "tir": 9 }
25
0
0
omr-ws-a6a465dea36fd9c973798baf81a352c5e317f79cae360141e2c85b5f4a86a2a8
Calculate $(-1)^{47} + 2^{(3^3+4^2-6^2)}$.
[ "127" ]
[ "Calculate $(-1)^{47} + 2^{(3^3+4^2-6^2)}$." ]
[ "MATH_training_set" ]
[ "cot" ]
{ "cot": 16 }
16
0
0
omr-ws-355f21f4cd0325f8fb1a5602607c819a9273918a8a3c255369ce32eeb1996316
Calculate $(\cos(2\pi/7))^{1/3} + (\cos(4\pi/7))^{1/3} + (\cos(6\pi/7))^{1/3}$.
[ "\\sqrt[3]{\\frac{1}{2}}" ]
[ "Calculate $(\\cos(2\\pi/7))^{1/3} + (\\cos(4\\pi/7))^{1/3} + (\\cos(6\\pi/7))^{1/3}$." ]
[ "aops_c6_high_school_olympiads" ]
[ "cot" ]
{ "cot": 2 }
2
0
0
omr-ws-9158012d4b13c5b38c489e00eee6dc3c15bc66001f09a18193e7135cb2a0ddbb
Calculate $1 + 2 + 3 + 4 - 5 - 6 - 7 - 8 + 9 + \ldots - 96 + 97 + 98 + 99 + 100$.
[ "202" ]
[ "Calculate $1 + 2 + 3 + 4 - 5 - 6 - 7 - 8 + 9 + \\ldots - 96 + 97 + 98 + 99 + 100$." ]
[ "aops_c4_high_school_math" ]
[ "cot", "tir" ]
{ "cot": 15, "tir": 5 }
20
0
0
omr-ws-1a545785f6582dd351b24834b347c4eb9a89e23ba85c96f600e2ac193ff03b34
Calculate $1+5\sin 2\alpha -3\cos ^{-1}2\alpha $ if $\tan \alpha =-2$.
[ "2" ]
[ "Calculate $1+5\\sin 2\\alpha -3\\cos ^{-1}2\\alpha $ if $\\tan \\alpha =-2$." ]
[ "aops_c6_high_school_olympiads" ]
[ "additional_problems" ]
{ "additional_problems": 1 }
1
0
0
omr-ws-ace66562bb77639ed956645ee634a5b771403342e7cdf6be44e6ed3d8f54589c
Calculate $1+\sum_{k=0}^{m-1}\binom{m}{k}S_{n}(k)$ where $S_{n}(k)=\sum_{j=1}^{n}j^k$.
[ "\\((n+1)^m\\)" ]
[ "Calculate $1+\\sum_{k=0}^{m-1}\\binom{m}{k}S_{n}(k)$ where $S_{n}(k)=\\sum_{j=1}^{n}j^k$." ]
[ "aops_c6_high_school_olympiads" ]
[ "cot", "tir" ]
{ "cot": 16, "tir": 10 }
26
0
0
omr-ws-482fa036b157b0059c2aacea6452cf656e22e9c997022c61ea69ecacb53fc710
Calculate $11^{644} \bmod{645}$.
[ "1" ]
[ "Calculate $11^{644} \\bmod{645}$." ]
[ "aops_c6_high_school_olympiads" ]
[ "cot" ]
{ "cot": 16 }
16
0
0
omr-ws-14aab518e73d0bc8b9a709ad4c0e41b55c4427dcd870626693bdad06cee0d5b1
Calculate $1357^{2468}$ and express the answer in three significant digits. For example, the format should be $1.23 \times 10^3$.
[ "\\(1.61 \\times 10^{7731}\\)" ]
[ "Calculate $1357^{2468}$ and express the answer in three significant digits. For example, the format should be $1.23 \\times 10^3$." ]
[ "aops_c4_high_school_math" ]
[ "cot", "genselect", "tir" ]
{ "cot": 3, "genselect": 2, "tir": 21 }
26
0
0
omr-ws-366f45bf157c788baf812a6cf167e4b74a1dbda9030485e64cb54e591071c1c7
Calculate $17^{-1} \bmod{113}$.
[ "20" ]
[ "Calculate $17^{-1} \\bmod{113}$." ]
[ "aops_c6_high_school_olympiads" ]
[ "cot", "tir" ]
{ "cot": 16, "tir": 20 }
36
0
0
omr-ws-dd19afa9fb59dc7a233c8e463f9a1fc05ea263aee91753d4912b61e8d1e7201c
Calculate $37^{230} \bmod{113}$.
[ "50" ]
[ "Calculate $37^{230} \\bmod{113}$." ]
[ "aops_c6_high_school_olympiads" ]
[ "cot", "tir" ]
{ "cot": 16, "tir": 10 }
26
0
0
omr-ws-e210daadb8bc47c62eede295c90ff0b3f92c6dbce3416050da8c0cb1d397cd75
Calculate $37^{380} \bmod{63}$.
[ "46" ]
[ "Calculate $37^{380} \\bmod{63}$." ]
[ "aops_c6_high_school_olympiads" ]
[ "cot", "tir" ]
{ "cot": 16, "tir": 18 }
34
0
0
omr-ws-1b647475d5c24030b81e237cc515dade22000e826feb3c27f44cd883f81dfb46
Calculate $42^{1003} \mod{2489}$.
[ "1776" ]
[ "Calculate $42^{1003} \\mod{2489}$." ]
[ "aops_c6_high_school_olympiads" ]
[ "cot", "tir" ]
{ "cot": 13, "tir": 27 }
40
0
0
omr-ws-6e347b67d6938f0b47b9079e4355f3e30ed9ad7ad588b69cfbe8ec4b77ec524d
Calculate $5 \cdot 8! \cdot (10^9 - 1) \mod 77$.
[ "49" ]
[ "Calculate $5 \\cdot 8! \\cdot (10^9 - 1) \\mod 77$." ]
[ "aops_c6_high_school_olympiads" ]
[ "cot", "tir" ]
{ "cot": 16, "tir": 16 }
32
0
0
omr-ws-4cbef669522e2c77ce1527c28083c28ff3c42186c2b20b4da9570d9b6c1c9bf5
Calculate $5\cdot5! + 4\cdot4!+4!$.
[ "720" ]
[ "Calculate $5\\cdot5! + 4\\cdot4!+4!$." ]
[ "MATH_training_set" ]
[ "cot" ]
{ "cot": 16 }
16
0
0
omr-ws-4bfd9674946280989ab718d58e4aad0db6ed1ad88c0a75353f556abcd4dcbd5d
Calculate $6 \cdot 8\frac{1}{3}$.
[ "50" ]
[ "Calculate $6 \\cdot 8\\frac{1}{3}$." ]
[ "MATH_training_set" ]
[ "cot" ]
{ "cot": 16 }
16
0
0
omr-ws-e4e7d5f3551d461de0a4729c33de84ebac75345286358de4339c600ccdcce872
Calculate $6!-5\cdot5!-5!$.
[ "0" ]
[ "Calculate $6!-5\\cdot5!-5!$." ]
[ "MATH_training_set" ]
[ "cot" ]
{ "cot": 16 }
16
0
0
omr-ws-18cc9cd964a875ba264bbb0eaed01a133de0104ffb9c2b629c81c2b20de7924d
Calculate $6\div2(1+2)$.
[ "9" ]
[ "Calculate $6\\div2(1+2)$." ]
[ "aops_c7_college_math" ]
[ "cot" ]
{ "cot": 16 }
16
0
0
omr-ws-b4717632f3736623f698def89c8000b605b7d041361bfd71319357c7bd8eed6d
Calculate $7^4 - 7^3 - 7^2$ without using a calculator.
[ "2009" ]
[ "Calculate $7^4 - 7^3 - 7^2$ without using a calculator." ]
[ "aops_c4_high_school_math" ]
[ "cot", "tir" ]
{ "cot": 16, "tir": 3 }
19
0
0
omr-ws-9b7acb3e96ee342e1040c339245870e99f1410f3150d15146012ce1f2f931be7
Calculate $7^{35461} \bmod{297}$.
[ "271" ]
[ "Calculate $7^{35461} \\bmod{297}$." ]
[ "aops_c6_high_school_olympiads" ]
[ "additional_problems" ]
{ "additional_problems": 1 }
1
0
0
omr-ws-8034aa0ece21b7747c6a16b8f679a5078114bcba78291f30880f91c76fa10dc6
Calculate $7^{644} \bmod{645}$.
[ "436" ]
[ "Calculate $7^{644} \\bmod{645}$." ]
[ "aops_c6_high_school_olympiads" ]
[ "cot", "tir" ]
{ "cot": 16, "tir": 19 }
35
0
0
omr-ws-9d460fa224d7ce1adc2097b683c8ff6e5d3470f6701352ed5eeb8fc04876bbba
Calculate $9^^8^^7^^7^^6^^5^^4^^3^^2 \mod 9!$.
[ "45441" ]
[ "Calculate $9^^8^^7^^7^^6^^5^^4^^3^^2 \\mod 9!$." ]
[ "aops_c6_high_school_olympiads" ]
[ "cot", "genselect" ]
{ "cot": 14, "genselect": 6 }
20
0
0
omr-ws-4fa8d179966b2080db36769add243e5866c2ede239721a399eddc2e2ceaaad2c
Calculate $D('appeases')$, the number of permutations of the letters of the word 'appeases' such that no letter is in its original place.
[ "297" ]
[ "Calculate $D('appeases')$, the number of permutations of the letters of the word 'appeases' such that no letter is in its original place." ]
[ "aops_c6_high_school_olympiads", "c6_high_school_olympiads" ]
[ "tir" ]
{ "tir": 12 }
12
0
0
omr-ws-f79b1887d4392609808eb27e51916adf19fe66e7e89a0021acdd5a07f79068ec
Calculate $Der_k(B,B)$ where $k$ is a field, $A=k[x,y]$, $I=(x^2,xy,y^2)$, and $B=A/I$.
[ "$k^4$" ]
[ "Calculate $Der_k(B,B)$ where $k$ is a field, $A=k[x,y]$, $I=(x^2,xy,y^2)$, and $B=A/I$." ]
[ "aops_c7_college_math" ]
[ "cot", "genselect", "tir" ]
{ "cot": 12, "genselect": 4, "tir": 5 }
21
0
0
omr-ws-d81de41ac501656cf3999a70f66cc9c52c4bf1198b0b5b207c7924b7ba77a6c0
Calculate $E((1+\sqrt{2})^{2^{2^{2018}}}) \mod (2^{89}-1)$, where $E(x)$ is the integer part of $x$.
[ "1" ]
[ "Calculate $E((1+\\sqrt{2})^{2^{2^{2018}}}) \\mod (2^{89}-1)$, where $E(x)$ is the integer part of $x$." ]
[ "aops_c6_high_school_olympiads" ]
[ "cot", "genselect" ]
{ "cot": 11, "genselect": 8 }
19
0
0
omr-ws-f5f49b1ac26277938491b87dc6fc66f2b6f2165c8aa19753caad86d2cbe27c11
Calculate $F_G \mod (2^{89}-1)$, where $(F_n)_n$ is the Fibonacci sequence and $G$ is the Graham number.
[ "0" ]
[ "Calculate $F_G \\mod (2^{89}-1)$, where $(F_n)_n$ is the Fibonacci sequence and $G$ is the Graham number." ]
[ "aops_c6_high_school_olympiads" ]
[ "cot", "genselect" ]
{ "cot": 14, "genselect": 3 }
17
0
0
omr-ws-1a1b6fb17945e3062c01facefb6e321f7a81e9441e98fb2cb2b2c6384afc469b
Calculate $H^*(\mathbb{RP}^n, \mathbb{Z}_2)$.
[ "\\mathbb{Z}_2[x]/(x^{n+1})" ]
[ "Calculate $H^*(\\mathbb{RP}^n, \\mathbb{Z}_2)$." ]
[ "aops_c7_college_math" ]
[ "cot" ]
{ "cot": 16 }
16
0
0
omr-ws-a1d9924d12b09de8944af4376747f9455c8cc6b50c06d2d8d29bbf49df90e864
Calculate $L(x_0, x_1, ..., x_n; \frac{x^{n+1}}{x+1})$.
[ "\\frac{x^{n+1} - \\frac{\\prod_{i=0}^n (x - x_i)}{\\prod_{i=0}^n (x_i + 1)}}{x + 1}" ]
[ "Calculate $L(x_0, x_1, ..., x_n; \\frac{x^{n+1}}{x+1})$." ]
[ "aops_c7_college_math" ]
[ "cot", "genselect" ]
{ "cot": 12, "genselect": 8 }
20
0
0
omr-ws-ba2e1d3d8f888d9634f8cc9fdae5d2e1a0c4741fb7b99f82c7efc2cfb67e6628
Calculate $L(x_0, x_1, ..., x_n; \frac{x^{n+1}}{x-1})$.
[ "\\dfrac{x^{n+1} - \\prod\\limits_{i=0}^n \\dfrac{x - x_i}{1 - x_i}}{x - 1}" ]
[ "Calculate $L(x_0, x_1, ..., x_n; \\frac{x^{n+1}}{x-1})$." ]
[ "aops_c7_college_math" ]
[ "cot", "genselect" ]
{ "cot": 12, "genselect": 8 }
20
0
0
omr-ws-fae45a2d74cfe2149f7033f5ac593171101b3266368a962efb1886006be6a5d7
Calculate $P(Z < 1.42)$ for a normal distribution with $\mu = 76$ and $\sigma = 7$.
[ "0.9222" ]
[ "Calculate $P(Z < 1.42)$ for a normal distribution with $\\mu = 76$ and $\\sigma = 7$." ]
[ "aops_c4_high_school_math" ]
[ "cot", "genselect" ]
{ "cot": 13, "genselect": 5 }
18
0
0
omr-ws-3b895a397bccbb90a553915d6bc47be102408a5003fbc402705b6d15da58c777
Calculate $P(|X-\mu_{X}|\geqslant k\sigma_{X})$ for $X\sim Exp(\lambda)$ and compare the answer to the bound given by Chebychev's inequality.
[ "\\( e^{-(k+1)} \\) if \\( k > 1 \\), otherwise \\( 1 - \\frac{2\\sinh(k)}{e} \\)" ]
[ "Calculate $P(|X-\\mu_{X}|\\geqslant k\\sigma_{X})$ for $X\\sim Exp(\\lambda)$ and compare the answer to the bound given by Chebychev's inequality." ]
[ "aops_c7_college_math" ]
[ "tir" ]
{ "tir": 1 }
1
0
0
omr-ws-519578f4b668df63b7c76a28b51550b934d088f90f05d173b39084d10307faed
Calculate $P(|X-\mu_{X}|\geqslant k\sigma_{X})$ for $X\sim U(0,1)$ and compare the answer to the bound given by Chebychev's inequality.
[ "\\( P(|X-\\mu_X|\\geqslant k\\sigma_X) = 1 - \\frac{k}{\\sqrt{3}} \\) for \\( k < \\sqrt{3} \\) and \\( 0 \\) for \\( k \\geq \\sqrt{3} \\)." ]
[ "Calculate $P(|X-\\mu_{X}|\\geqslant k\\sigma_{X})$ for $X\\sim U(0,1)$ and compare the answer to the bound given by Chebychev's inequality." ]
[ "aops_c7_college_math" ]
[ "cot", "tir" ]
{ "cot": 14, "tir": 22 }
36
0
0
omr-ws-cfad006c132f12ec8dbb0a0afe3ef645ff2d45caa3e8f095aa8227149ce8e275
Calculate $S(3, 6)$ where $S(m, n)$ is the number of $(x_1, x_2, \ldots, x_n)$ satisfying: (i) $0 \leq x_1 \leq x_2 \leq \ldots \leq x_n \leq n$ (ii) $3 \mid (x_1 + x_2 + \ldots + x_n)$
[ "312" ]
[ "Calculate $S(3, 6)$ where $S(m, n)$ is the number of $(x_1, x_2, \\ldots, x_n)$ satisfying:\n(i) $0 \\leq x_1 \\leq x_2 \\leq \\ldots \\leq x_n \\leq n$\n(ii) $3 \\mid (x_1 + x_2 + \\ldots + x_n)$" ]
[ "aops_c6_high_school_olympiads" ]
[ "cot", "genselect" ]
{ "cot": 11, "genselect": 7 }
18
0
0
omr-ws-45507d3cb940d26fe4bdd0921b8df847b76537da4c25f7cfe0a0ff0fdb12bdeb
Calculate $S(47, 2021)$ where $S(m, n)$ is the number of $(x_1, x_2, \ldots, x_n)$ satisfying: (i) $0 \leq x_1 \leq x_2 \leq \ldots \leq x_n \leq n$ (ii) $47 \mid (x_1 + x_2 + \ldots + x_n)$
[ "\\dfrac{1}{47} \\dbinom{4042}{2021}" ]
[ "Calculate $S(47, 2021)$ where $S(m, n)$ is the number of $(x_1, x_2, \\ldots, x_n)$ satisfying:\n(i) $0 \\leq x_1 \\leq x_2 \\leq \\ldots \\leq x_n \\leq n$\n(ii) $47 \\mid (x_1 + x_2 + \\ldots + x_n)$" ]
[ "aops_c6_high_school_olympiads" ]
[ "cot", "genselect" ]
{ "cot": 8, "genselect": 4 }
12
0
0
omr-ws-0d797653298bac649049a04f53bc6895ed7d7767f03413adb3db668e1e120078
Calculate $[(12^{12} \div 12^{11})^2 \cdot 4^2] \div 2^4$.
[ "144" ]
[ "Calculate $[(12^{12} \\div 12^{11})^2 \\cdot 4^2] \\div 2^4$." ]
[ "MATH_training_set" ]
[ "cot" ]
{ "cot": 16 }
16
0
0
omr-ws-87d4e5f4d13be3f6615dadfe7da81547e35b5e70a3f1288d8c3e4ac34560e7cb
Calculate $\Psi(s,t)=E(e^{i s V_t})$ where $(V_t)$ is the process defined by $dV_t=\lambda(\theta-V_t)dt+\nu \sqrt{V_t}dW_t$.
[ "\\Psi(s, t) = \\left(1 - \\frac{\\nu^2 i s}{2\\lambda}(1 - e^{-\\lambda t})\\right)^{\\frac{2\\lambda\\theta}{\\nu^2}} \\exp\\left( \\frac{i s V_0 e^{-\\lambda t}}{1 - \\frac{\\nu^2 i s}{2\\lambda}(1 - e^{-\\lambda t})} \\right)" ]
[ "Calculate $\\Psi(s,t)=E(e^{i s V_t})$ where $(V_t)$ is the process defined by $dV_t=\\lambda(\\theta-V_t)dt+\\nu \\sqrt{V_t}dW_t$." ]
[ "aops_c7_college_math" ]
[ "additional_problems", "genselect" ]
{ "additional_problems": 1, "genselect": 4 }
5
0
0
omr-ws-374759e5ff8ccbf3e8d8b2a5f396db952629a2e80b511df87039158796747dc1
Calculate $\arccos(\cos 10)$.
[ "\\(4\\pi - 10\\)" ]
[ "Calculate $\\arccos(\\cos 10)$." ]
[ "aops_c6_high_school_olympiads" ]
[ "cot", "tir" ]
{ "cot": 16, "tir": 27 }
43
0
0
omr-ws-88a96f9ecea03086d62a1ed3cf7b8ac99e96ea24ed7ec2e9690ae13ce235628f
Calculate $\arcsin(\sin 6)$.
[ "\\(6 - 2\\pi\\)" ]
[ "Calculate $\\arcsin(\\sin 6)$." ]
[ "aops_c6_high_school_olympiads" ]
[ "cot", "tir" ]
{ "cot": 16, "tir": 29 }
45
0
0
omr-ws-9e4eded37826caca86fcfbb70b68d9ef0aeadd9d4777c6bc5b7b0b6674313ebd
Calculate $\arcsin(\sin(\pi^2))$.
[ "3\\pi - \\pi^2", "\\(3\\pi - \\pi^2\\)" ]
[ "Calculate $\\arcsin(\\sin(\\pi^2))$." ]
[ "aops_c6_high_school_olympiads", "aops_c7_college_math" ]
[ "cot", "tir" ]
{ "cot": 32, "tir": 29 }
61
0
0
omr-ws-81e966cafc7d8e30e88341426b9d0240509960128c4750c3641ac0b5f5123b8c
Calculate $\binom{2010}{1}+\binom{2009}{2}+\cdots+\binom{1006}{1005}$.
[ "$F_{2012} - 1$" ]
[ "Calculate $\\binom{2010}{1}+\\binom{2009}{2}+\\cdots+\\binom{1006}{1005}$." ]
[ "aops_c6_high_school_olympiads" ]
[ "cot", "tir" ]
{ "cot": 46, "tir": 12 }
58
0
0
omr-ws-9a75438cf7e3a41c5abd09012bbfe91ea3cce9525e26c6099d0c6128ec655289
Calculate $\binom{99}{19}$ modulo 4.
[ "2" ]
[ "Calculate $\\binom{99}{19}$ modulo 4." ]
[ "aops_c4_high_school_math" ]
[ "cot" ]
{ "cot": 16 }
16
0
0
omr-ws-82139df20ccc952a9078b8ab4b0794b670f9494c69ad9a9d49d03abf26114540
Calculate $\cos (\theta -\varphi )$ if $\cos \theta +\cos \varphi =a$, $\sin \theta -\sin \varphi =b$, $a^2+b^2\ne 0$.
[ "$\\frac{a^2-b^2}{a^2+b^2}$" ]
[ "Calculate $\\cos (\\theta -\\varphi )$ if $\\cos \\theta +\\cos \\varphi =a$, $\\sin \\theta -\\sin \\varphi =b$, $a^2+b^2\\ne 0$." ]
[ "aops_c6_high_school_olympiads" ]
[ "additional_problems" ]
{ "additional_problems": 1 }
1
0
0
omr-ws-d7f9813efd1acf96ce692e2d36ff2996ff4f0877a75af352b4d0540f004cd426
Calculate $\cos(8x)$ given that $\tan(x) \cdot \tan(2x) = \cot(2x) \cdot \cot(3x)$.
[ "-1" ]
[ "Calculate $\\cos(8x)$ given that $\\tan(x) \\cdot \\tan(2x) = \\cot(2x) \\cdot \\cot(3x)$." ]
[ "aops_c4_high_school_math" ]
[ "cot" ]
{ "cot": 15 }
15
0
0
omr-ws-526e83725d4963a6e869ab3c9ecd8a8f4fd17fee0c6d6d19698efb6cfc1f1e60
Calculate $\cos\frac{\pi}{17}\cos\frac{2\pi}{17}\cos\frac{4\pi}{17}\cos\frac{8\pi}{17}$.
[ "\\(\\frac{1}{16}\\)" ]
[ "Calculate $\\cos\\frac{\\pi}{17}\\cos\\frac{2\\pi}{17}\\cos\\frac{4\\pi}{17}\\cos\\frac{8\\pi}{17}$." ]
[ "aops_c6_high_school_olympiads" ]
[ "cot", "tir" ]
{ "cot": 16, "tir": 29 }
45
0
0
omr-ws-994653898d8df798cf475eac87c6e0a6d52ab2c40c0cb7921283dd3540910aef
Calculate $\cos\frac{\pi}{7} \cdot \cos\frac{2\pi}{7} \cdot \cos\frac{4\pi}{7}$.
[ "\\(-\\frac{1}{8}\\)" ]
[ "Calculate $\\cos\\frac{\\pi}{7} \\cdot \\cos\\frac{2\\pi}{7} \\cdot \\cos\\frac{4\\pi}{7}$." ]
[ "aops_c6_high_school_olympiads" ]
[ "cot", "tir" ]
{ "cot": 16, "tir": 30 }
46
0
0
omr-ws-ffcf9b0d4d6a1f81e5da07cb382a7b7c9a95988f2a02935f162b1f6c6182d58d
Calculate $\cos\left(\frac{4\pi}{11}\right) + \cos\left(\frac{7\pi}{11}\right)$ using the winding function.
[ "0" ]
[ "Calculate $\\cos\\left(\\frac{4\\pi}{11}\\right) + \\cos\\left(\\frac{7\\pi}{11}\\right)$ using the winding function." ]
[ "aops_c4_high_school_math" ]
[ "cot" ]
{ "cot": 16 }
16
0
0
omr-ws-9248fb0496546e58aaae49021008d3356546e5bd0d799959f4c06d96dbf2063e
Calculate $\cos{15^\circ}$ and $\cos{75^\circ}.$
[ "\\(\\cos 15^\\circ = \\frac{\\sqrt{6} + \\sqrt{2}}{4}\\), \\(\\cos 75^\\circ = \\frac{\\sqrt{6} - \\sqrt{2}}{4}\\)" ]
[ "Calculate $\\cos{15^\\circ}$ and $\\cos{75^\\circ}.$" ]
[ "aops_c4_high_school_math" ]
[ "tir" ]
{ "tir": 22 }
22
0
0
omr-ws-b3401749a13ff0259ce6941d4e394283a8f7897e2f1fea75c4ac978d863a3a01
Calculate $\displaystyle \int_0^1 x^{n-1}\ln x\,dx$ for a positive integer $n$.
[ "\\(-\\frac{1}{n^2}\\) for \\(n \\ge 2\\) and \\(-1\\) for \\(n = 1\\)." ]
[ "Calculate $\\displaystyle \\int_0^1 x^{n-1}\\ln x\\,dx$ for a positive integer $n$." ]
[ "aops_c7_college_math" ]
[ "additional_problems" ]
{ "additional_problems": 1 }
1
0
0
omr-ws-bf170ec86a37c979285e196217d3ac1631acb08d2590afec2b5f39378c364f44
Calculate $\displaystyle \lim_{n\to \infty}\int_{0}^{\frac{\pi}{2}}\sqrt[n]{\sin^{n}(x)+\cos^{n}(x)}dx$.
[ "\\(\\sqrt{2}\\)" ]
[ "Calculate $\\displaystyle \\lim_{n\\to \\infty}\\int_{0}^{\\frac{\\pi}{2}}\\sqrt[n]{\\sin^{n}(x)+\\cos^{n}(x)}dx$." ]
[ "aops_c7_college_math" ]
[ "cot", "tir" ]
{ "cot": 16, "tir": 28 }
44
0
0
omr-ws-1d495786fc5881c85342c403ec833ed89413952aabbfba82ff716d809fc7b914
Calculate $\displaystyle \lim_{n\to \infty}n^{2}\left(\int_{0}^{\frac{\pi}{2}}\sqrt[n]{\sin^{n}(x)+\cos^{n}(x)}dx-\lim_{n\to \infty} \int_{0}^{\frac{\pi}{2}}\sqrt[n]{\sin^{n}(x)+\cos^{n}(x)}dx\right)$.
[ "\\dfrac{\\sqrt{2}\\, \\pi^2}{24}" ]
[ "Calculate $\\displaystyle \\lim_{n\\to \\infty}n^{2}\\left(\\int_{0}^{\\frac{\\pi}{2}}\\sqrt[n]{\\sin^{n}(x)+\\cos^{n}(x)}dx-\\lim_{n\\to \\infty} \\int_{0}^{\\frac{\\pi}{2}}\\sqrt[n]{\\sin^{n}(x)+\\cos^{n}(x)}dx\\right)$." ]
[ "aops_c7_college_math" ]
[ "cot" ]
{ "cot": 8 }
8
0
0
omr-ws-885bde6202daacdcdf83108fe3e57870e132b6e5b1c0e5def2208dd1cb4f8ba4
Calculate $\displaystyle \sum^{3n-1}_{r=0}(-1)^r\binom{6n}{2r+1}3^r$.
[ "0" ]
[ "Calculate $\\displaystyle \\sum^{3n-1}_{r=0}(-1)^r\\binom{6n}{2r+1}3^r$." ]
[ "aops_c6_high_school_olympiads" ]
[ "cot" ]
{ "cot": 16 }
16
0
0
omr-ws-0d5f9921f1bade86a2caddd86dd860b3a6a42ab7016a409b7e34da45ad790a1b
Calculate $\displaystyle \sum_{0\le k\le n}(-1)^k\binom{2n+1}{k}(2n+1-2k)^{2l+1}$, where $l \in \mathbb{Z}_{\ge 0}$.
[ "0" ]
[ "Calculate $\\displaystyle \\sum_{0\\le k\\le n}(-1)^k\\binom{2n+1}{k}(2n+1-2k)^{2l+1}$, where $l \\in \\mathbb{Z}_{\\ge 0}$." ]
[ "aops_c7_college_math" ]
[ "cot", "tir" ]
{ "cot": 2, "tir": 1 }
3
0
0
omr-ws-5265d1d06ea3aa53a6e61997308fbfdb1d0abc5ee676be6e3103c38621e47eff
Calculate $\displaystyle \sum_{i=0}^{2022} \left[ (-1)^i i \binom{4046}{2023-i} \right]$.
[ "\\(-\\binom{4044}{2022}\\)" ]
[ "Calculate $\\displaystyle \\sum_{i=0}^{2022} \\left[ (-1)^i i \\binom{4046}{2023-i} \\right]$." ]
[ "aops_c6_high_school_olympiads" ]
[ "cot" ]
{ "cot": 1 }
1
0
0
omr-ws-9d2cf722417c9b1651719fca7ba9b3790acae65234b6ebf74a4bcd71ac770e1d
Calculate $\displaystyle \sum_{n=0}^{\infty}(-1)^n\left(\frac{1}{(n+1)^2}-\frac{1}{(n+2)^2}+\frac{1}{(n+3)^2}-\dots \right).$
[ "\\(\\log 2\\)" ]
[ "Calculate $\\displaystyle \\sum_{n=0}^{\\infty}(-1)^n\\left(\\frac{1}{(n+1)^2}-\\frac{1}{(n+2)^2}+\\frac{1}{(n+3)^2}-\\dots \\right).$" ]
[ "aops_c7_college_math", "c7_college_math" ]
[ "cot", "genselect", "tir" ]
{ "cot": 15, "genselect": 8, "tir": 21 }
44
0
0
omr-ws-1c71cf22a4a5ed0ecc7f0a4ce44c9b5f9727ca380a847751beea91bdbcc4041c
Calculate $\displaystyle\int\limits_1^2 x^{\mathrm{e}^x} \mathrm{\,d}x$.
[ "24.6" ]
[ "Calculate $\\displaystyle\\int\\limits_1^2 x^{\\mathrm{e}^x} \\mathrm{\\,d}x$." ]
[ "aops_c7_college_math" ]
[ "cot", "genselect" ]
{ "cot": 6, "genselect": 6 }
12
0
0
omr-ws-26f7e5f1016178ac1f075e8d952d358f687fae70fa40ab7110168ebf5129a032
Calculate $\displaystyle\lim_{x \to 0} \dfrac{1}{[x]}$, where $[.]$ denotes the greatest integer function. Determine whether the limit exists and, if so, what its value is.
[ "-1" ]
[ "Calculate $\\displaystyle\\lim_{x \\to 0} \\dfrac{1}{[x]}$, where $[.]$ denotes the greatest integer function. Determine whether the limit exists and, if so, what its value is." ]
[ "aops_c7_college_math" ]
[ "cot", "genselect" ]
{ "cot": 10, "genselect": 2 }
12
0
0
omr-ws-d829ccc9b4e360097c4cec7b87c9dc112a0d6c65ac30436e827c0d80f16d74b0
Calculate $\displaystyle\lim_{x\to 0}\ \left[\int_0^{x} \frac{(1+\sin t)^2}{x}\ \text{d}t\right]$.
[ "1" ]
[ "Calculate $\\displaystyle\\lim_{x\\to 0}\\ \\left[\\int_0^{x} \\frac{(1+\\sin t)^2}{x}\\ \\text{d}t\\right]$." ]
[ "aops_c7_college_math" ]
[ "cot" ]
{ "cot": 14 }
14
0
0
omr-ws-7de815045a640e61cd65dffba4584aebf4fb3b63f7768ec2355376070b0a01dd
Calculate $\displaystyle{\sum_{n=1}^\infty\left(\lfloor\sqrt[n]{2010}\rfloor-1\right)}$ where $\lfloor x\rfloor$ is the largest integer less than or equal to $x$.
[ "2077" ]
[ "Calculate $\\displaystyle{\\sum_{n=1}^\\infty\\left(\\lfloor\\sqrt[n]{2010}\\rfloor-1\\right)}$ where $\\lfloor x\\rfloor$ is the largest integer less than or equal to $x$." ]
[ "aops_c4_high_school_math" ]
[ "cot", "tir" ]
{ "cot": 16, "tir": 28 }
44
0
0
omr-ws-7e303ae9a624c38f465d40649294f6f34392c4a2c95f243987ae7265c73a7aff
Calculate $\frac{(1-\sqrt{3}i)^{100}}{2^{100}}$.
[ "\\(\\frac{-1 + \\sqrt{3}i}{2}\\)" ]
[ "Calculate $\\frac{(1-\\sqrt{3}i)^{100}}{2^{100}}$." ]
[ "aops_c4_high_school_math" ]
[ "cot", "tir" ]
{ "cot": 16, "tir": 27 }
43
0
0
omr-ws-d0d846ec4d9bafc7c6f9ec9f2fc19ae664a5a82eae687c10a045c5d7f946d6cb
Calculate $\frac{1}{2} \cdot \frac{3}{5} \cdot \frac{7}{11}$.
[ "\\frac{21}{110}" ]
[ "Calculate $\\frac{1}{2} \\cdot \\frac{3}{5} \\cdot \\frac{7}{11}$." ]
[ "MATH_training_set" ]
[ "cot" ]
{ "cot": 16 }
16
0
0
omr-ws-1edaaff87998d6aebd0aa57e53526b78eaba36008ccae3833dca48fe8d9a8b6b
Calculate $\frac{1}{4} \cdot \frac{2}{5} \cdot \frac{3}{6} \cdot \frac{4}{7} \cdots \frac{49}{52} \cdot \frac{50}{53}$. Express your answer as a common fraction.
[ "\\frac{1}{23426}" ]
[ "Calculate $\\frac{1}{4} \\cdot \\frac{2}{5} \\cdot \\frac{3}{6} \\cdot \\frac{4}{7} \\cdots \\frac{49}{52} \\cdot \\frac{50}{53}$. Express your answer as a common fraction." ]
[ "MATH_training_set" ]
[ "cot" ]
{ "cot": 16 }
16
0
0
omr-ws-7364beb09501dfa7dfbb679db27a4841bd02fe207570ad05f55bb27d52c02c45
Calculate $\frac{3 \cdot 5! + 15\cdot 4!}{6!}$
[ "1" ]
[ "Calculate $\\frac{3 \\cdot 5! + 15\\cdot 4!}{6!}$" ]
[ "MATH_training_set" ]
[ "cot" ]
{ "cot": 16 }
16
0
0
omr-ws-e8d9dee85094264c8cce398f4b75e679a2b0fa94fe6f4a394e217e0d44f2328e
Calculate $\frac{6^k}{(3^k-2^k)(3^{k+1}-2^{k+1})}$.
[ "\\dfrac{2^k}{3^k - 2^k} - \\dfrac{2^{k+1}}{3^{k+1} - 2^{k+1}}" ]
[ "Calculate $\\frac{6^k}{(3^k-2^k)(3^{k+1}-2^{k+1})}$." ]
[ "aops_c4_high_school_math" ]
[ "cot" ]
{ "cot": 14 }
14
0
0