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热门问题

等级	主题	问题	格式化的问题
140601	化简矩阵	table[[x,y],[1,2],[2,3],[3,4]]	$\begin{array}{c} x & y \\ 1 & 2 \\ 2 & 3 \\ 3 & 4 \end{array}$
140602	化简矩阵	table[[x,y],[1,3],[2,7],[3,11]]	$\begin{array}{c} x & y \\ 1 & 3 \\ 2 & 7 \\ 3 & 11 \end{array}$
140603	化简矩阵	table[[x,y],[1,4],[2,6],[3,7]]	$\begin{array}{c} x & y \\ 1 & 4 \\ 2 & 6 \\ 3 & 7 \end{array}$
140604	化简矩阵	[[-7,1],[0,3]]^2	${[\begin{array}{c} - 7 & 1 \\ 0 & 3 \end{array}]}^{2}$
140605	化简矩阵	[[6x+4y],[7K-7z],[-3W+9V],[7M-8N]]-[[-3x-6y],[-5K-9Z],[-5W+5V],[4M-5N]]	$[\begin{array}{c} 6 x + 4 y \\ 7 K - 7 z \\ - 3 W + 9 V \\ 7 M - 8 N \end{array}] - [\begin{array}{c} - 3 x - 6 y \\ - 5 K - 9 Z \\ - 5 W + 5 V \\ 4 M - 5 N \end{array}]$
140606	化简矩阵	[[6,y],[18,z]]-3[[x+1,2],[0,1]]=[[18,17],[9w,4z]]	$[\begin{array}{c} 6 & y \\ 18 & z \end{array}] - 3 [\begin{array}{c} x + 1 & 2 \\ 0 & 1 \end{array}] = [\begin{array}{c} 18 & 17 \\ 9 w & 4 z \end{array}]$
140607	化简矩阵	[[5,2],[3,0]]-2[[4,3],[-1,6]]+[[2,8],[0,5]]	$[\begin{array}{c} 5 & 2 \\ 3 & 0 \end{array}] - 2 [\begin{array}{c} 4 & 3 \\ - 1 & 6 \end{array}] + [\begin{array}{c} 2 & 8 \\ 0 & 5 \end{array}]$
140608	化简矩阵	[[a_11,a_12],[a_21,a_22]]+[[b_11,b_12],[b_21,b_22]]	$[\begin{array}{c} a_{11} & a_{12} \\ a_{21} & a_{22} \end{array}] + [\begin{array}{c} b_{11} & b_{12} \\ b_{21} & b_{22} \end{array}]$
140609	化简矩阵	[[3,6,9],[2,4,8]]	$[\begin{array}{c} 3 & 6 & 9 \\ 2 & 4 & 8 \end{array}]$
140610	化简矩阵	[[4],[-2]]-[[-1],[2]]-[[0],[5]]	$[\begin{array}{c} 4 \\ - 2 \end{array}] - [\begin{array}{c} - 1 \\ 2 \end{array}] - [\begin{array}{c} 0 \\ 5 \end{array}]$
140611	化简矩阵	[[2,4],[x,3]]=-2	$[\begin{array}{c} 2 & 4 \\ x & 3 \end{array}] = - 2$
140612	化简矩阵	[[-2,8],[-11,5]]+3[[5,3,-11],[44,0,5],[-3,2,8]]	$[\begin{array}{c} - 2 & 8 \\ - 11 & 5 \end{array}] + 3 [\begin{array}{c} 5 & 3 & - 11 \\ 44 & 0 & 5 \\ - 3 & 2 & 8 \end{array}]$
140613	化简矩阵	[[-2],[-6]]-3[[-6],[0]]	$[\begin{array}{c} - 2 \\ - 6 \end{array}] - 3 [\begin{array}{c} - 6 \\ 0 \end{array}]$
140614	求斜率和y轴截距	(0,0) , (1,4)	$(0, 0) (1, 4)$
140615	求解集合的交集	A={-2,0,2,4,6,8}B={0,4,8,12,16}	$A = {- 2, 0, 2, 4, 6, 8} B = {0, 4, 8, 12, 16}$
140616	求解集合的交集	A={-4,-6,6,4} , B={-8,-4,-5,-6,0}	$A = {- 4, - 6, 6, 4}$ , $B = {- 8, - 4, - 5, - 6, 0}$
140617	求解集合的交集	{5,6,7,8,9} union {1,2,3,4}	${5, 6, 7, 8, 9} \cup {1, 2, 3, 4}$
140618	求解集合的交集	{4,5,7,8} intersect {5,8,9}	${4, 5, 7, 8} \cap {5, 8, 9}$
140619	求解集合的交集	{1,4,7,10} intersect {2,5,8,11,14}	${1, 4, 7, 10} \cap {2, 5, 8, 11, 14}$
140620	求解集合的交集	{0,3,6,9,12} union {6,7,8}	${0, 3, 6, 9, 12} \cup {6, 7, 8}$
140621	求解集合的交集	{1,2,4,6} intersect {0,2,6,7}	${1, 2, 4, 6} \cap {0, 2, 6, 7}$
140622	求斜率和y轴截距	(-6,5) , (-3,3) , (0,1)	$(- 6, 5)$ , $(- 3, 3)$ , $(0, 1)$
140623	求斜率和y轴截距	(-6,0) , (0,7)	$(- 6, 0) (0, 7)$
140624	求斜率和y轴截距	(-6,-4) , (-2,-2)	$(- 6, - 4) (- 2, - 2)$
140625	求斜率和y轴截距	(-5,6) , (5,2)	$(- 5, 6)$ , $(5, 2)$
140626	求斜率和y轴截距	(-5,2) , (5,4)	$(- 5, 2) (5, 4)$
140627	求斜率和y轴截距	(-5,0) , (0,1)	$(- 5, 0) (0, 1)$
140628	求斜率和y轴截距	(-5,-1) , (5,13)	$(- 5, - 1)$ , $(5, 13)$
140629	求斜率和y轴截距	(5,10) , (7,14)	$(5, 10) (7, 14)$
140630	求斜率和y轴截距	(-4,1) , (4,7)	$(- 4, 1) (4, 7)$
140631	求斜率和y轴截距	(4,-3) , (8,5)	$(4, - 3) (8, 5)$
140632	求斜率和y轴截距	(-4,2) , (6,-3)	$(- 4, 2) (6, - 3)$
140633	求斜率和y轴截距	(-4,47) , (2,-16)	$(- 4, 47) (2, - 16)$
140634	求斜率和y轴截距	(4,5) , (12,11)	$(4, 5) (12, 11)$
140635	求斜率和y轴截距	(2,-5) , (-4,1)	$(2, - 5) (- 4, 1)$
140636	求斜率和y轴截距	(2,4) , (3,6)	$(2, 4) (3, 6)$
140637	求斜率和y轴截距	(-2,-20) , (0,-12)	$(- 2, - 20) (0, - 12)$
140638	求斜率和y轴截距	(2,3) , (6,5)	$(2, 3) (6, 5)$
140639	求斜率和y轴截距	(3,2) , (4,9)	$(3, 2) (4, 9)$
140640	求斜率和y轴截距	(-3,5) , (6,2)	$(- 3, 5) (6, 2)$
140641	求斜率和y轴截距	(-3,5) , (9,1)	$(- 3, 5)$ , $(9, 1)$
140642	求斜率和y轴截距	(2,11) , (-8,-19)	$(2, 11) (- 8, - 19)$
140643	求斜率和y轴截距	(2,-18) , (6,-27) , (10,-36)	$(2, - 18) (6, - 27) (10, - 36)$
140644	求斜率和y轴截距	(2,1) , (-2,5)	$(2, 1) (- 2, 5)$
140645	求斜率和y轴截距	(-2,1) , (4,6)	$(- 2, 1) (4, 6)$
140646	求斜率和y轴截距	(-14,9) , (-10,18)	$(- 14, 9) (- 10, 18)$
140647	求斜率和y轴截距	(15,-3) , (20,-5)	$(15, - 3) (20, - 5)$
140648	求斜率和y轴截距	(15,-3) , (20,-5) , (25,-7)	$(15, - 3) (20, - 5) (25, - 7)$
140649	求斜率和y轴截距	(1,6) , (-1,8)	$(1, 6) (- 1, 8)$
140650	求斜率和y轴截距	(1,2) , (2,5)	$(1, 2) (2, 5)$
140651	求斜率和y轴截距	(1,2) , (3,10) , (5,18)	$(1, 2) (3, 10) (5, 18)$
140652	求斜率和y轴截距	(-1,2) , (3,-5)	$(- 1, 2) (3, - 5)$
140653	求斜率和y轴截距	(1,2) , (3,8)	$(1, 2) (3, 8)$
140654	求斜率和y轴截距	(0,0) , (2,5)	$(0, 0) (2, 5)$
140655	求斜率和y轴截距	(0,3) , (1,7)	$(0, 3) (1, 7)$
140656	求斜率和y轴截距	(0,2) , (1,7) , (2,12) , (3,17) , (4,22)	$(0, 2)$ , $(1, 7)$ , $(2, 12)$ , $(3, 17)$ , $(4, 22)$
140657	求斜率和y轴截距	(1,0) , (0,-5)	$(1, 0) (0, - 5)$
140658	求斜率和y轴截距	(0,6) , (6,0)	$(0, 6) (6, 0)$
140659	求斜率和y轴截距	(0,5) , (1,3)	$(0, 5) (1, 3)$
140660	求斜率和y轴截距	(0,-5) , (2,3)	$(0, - 5) (2, 3)$
140661	求斜率和y轴截距	(0,5) , (1,4) , (2,3) , (3,2) , (4,1)	$(0, 5)$ , $(1, 4)$ , $(2, 3)$ , $(3, 2)$ , $(4, 1)$
140662	求斜率和y轴截距	(0,4) , (2,-2)	$(0, 4) (2, - 2)$
140663	求斜率和y轴截距	(0,4) , (3,5)	$(0, 4) (3, 5)$
140664	求斜率和y轴截距	(-7,4) , (1,4)	$(- 7, 4)$ , $(1, 4)$
140665	求斜率和y轴截距	(-7,-5) , (-7,7)	$(- 7, - 5)$ , $(- 7, 7)$
140666	求斜率和y轴截距	(-8,-1) , (-6,5)	$(- 8, - 1) (- 6, 5)$
140667	求斜率和y轴截距	(8,-16) , (1,5)	$(8, - 16) (1, 5)$
140668	求斜率和y轴截距	(7,0) , (0,10)	$(7, 0) (0, 10)$
140669	求斜率和y轴截距	(-9,7) , (9,1)	$(- 9, 7)$ , $(9, 1)$
140670	求凹凸性	y=x 2-x^2 的平方根	$y = x \sqrt{2 - x^{2}}$
140671	求三角函数值	sin(pi/2)cos(pi/6)-cos(pi/2)sin(pi/6)	$\sin (\frac{π}{2}) \cos (\frac{π}{6}) - \cos (\frac{π}{2}) \sin (\frac{π}{6})$
140672	求三角函数值	sin(-pi/4)	$\sin (- \frac{π}{4})$
140673	求三角函数值	csc(x)=-2	$\csc (x) = - 2$
140674	求三角函数值	cot(x)=- 3 的平方根	$\cot (x) = - \sqrt{3}$
140675	求三角函数值	cot(x)^2	$\cot^{2} (x)$
140676	求三角函数值	cos(x)=5/13	$\cos (x) = \frac{5}{13}$
140677	求三角函数值	sin((4pi)/3)	$\sin (\frac{4 π}{3})$
140678	求三角函数值	sin((5pi)/12)cos(pi/4)-cos((5pi)/12)sin(pi/4)	$\sin (\frac{5 π}{12}) \cos (\frac{π}{4}) - \cos (\frac{5 π}{12}) \sin (\frac{π}{4})$
140679	求三角函数值	sin(3theta)=-1	$\sin (3 t h e t a) = - 1$
140680	求三角函数值	sin(-3x)	$\sin (- 3 x)$
140681	求三角函数值	sin(2x)=-( 3)/2 的平方根	$\sin (2 x) = - \frac{\sqrt{3}}{2}$
140682	求三角函数值	sin((13pi)/4)	$\sin (\frac{13 π}{4})$
140683	求三角函数值	sin(x+(11pi)/6)	$\sin (x + \frac{11 π}{6})$
140684	求三角函数值	arcsin(0.65)	$\arcsin (0.65)$
140685	求三角函数值	sin(x)=-1/4	$\sin (x) = - \frac{1}{4}$
140686	求三角函数值	sin(x)=-1/5 , pi<x<(3pi)/2 , cos(x)	$\sin (x) = - \frac{1}{5}$ , $π < x < \frac{3 π}{2}$ , $\cos (x)$
140687	求三角函数值	sin(a)=4/5	$\sin (a) = \frac{4}{5}$
140688	求三角函数值	sin(x)+cot(x)cos(x) = square root of 3	$\sin (x) + \cot (x) \cos (x) = \sqrt{3}$
140689	求定义域和值域	x-3 的自然对数	$\ln (x - 3)$
140690	求定义域和值域	以 2 为底数 x-3 的对数	$\log_{2} (x - 3)$
140691	求三角函数值	tan(x)=-3	$\tan (x) = - 3$
140692	求三角函数值	tan(x)=3/5	$\tan (x) = \frac{3}{5}$
140693	求三角函数值	tan(x)=6/5	$\tan (x) = \frac{6}{5}$
140694	求三角函数值	tan(x/2)=( 3)/3 的平方根	$\tan (\frac{x}{2}) = \frac{\sqrt{3}}{3}$
140695	求三角函数值	tan(x)=-1/4	$\tan (x) = - \frac{1}{4}$
140696	求三角函数值	sin(x)=8/17	$\sin (x) = \frac{8}{17}$
140697	求三角函数值	sin(x)=-3/4	$\sin (x) = - \frac{3}{4}$
140698	求三角函数值	tan(0)=4/3	$\tan (0) = \frac{4}{3}$
140699	求三角函数值	tan(0) = square root of 3	$\tan (0) = \sqrt{3}$
140700	求变量	[[6,3],[8,4]]*[[x],[y]]=[[9],[12]]	$[\begin{array}{c} 6 & 3 \\ 8 & 4 \end{array}] \cdot [\begin{array}{c} x \\ y \end{array}] = [\begin{array}{c} 9 \\ 12 \end{array}]$