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热门问题

等级	主题	问题	格式化的问题
141101	求解矩阵方程	-2b=[[-12],[0],[16]]	$- 2 b = [\begin{array}{c} - 12 \\ 0 \\ 16 \end{array}]$
141102	求解矩阵方程	2x-[[-2,0],[1,4]]=[[5,10],[-15,9]]	$2 x - [\begin{array}{c} - 2 & 0 \\ 1 & 4 \end{array}] = [\begin{array}{c} 5 & 10 \\ - 15 & 9 \end{array}]$
141103	求解矩阵方程	2x-[[-4,6],[2,-3]]=[[2,-2],[8,5]]	$2 x - [\begin{array}{c} - 4 & 6 \\ 2 & - 3 \end{array}] = [\begin{array}{c} 2 & - 2 \\ 8 & 5 \end{array}]$
141104	求解矩阵方程	-8[[2,11,4],[0,2,-6]]=[[-16,-88,x],[0,-16,48]]	$- 8 [\begin{array}{c} 2 & 11 & 4 \\ 0 & 2 & - 6 \end{array}] = [\begin{array}{c} - 16 & - 88 & x \\ 0 & - 16 & 48 \end{array}]$
141105	求解矩阵方程	x+[[6,1],[-2,3]]=[[2,0],[-3,1]]	$x + [\begin{array}{c} 6 & 1 \\ - 2 & 3 \end{array}] = [\begin{array}{c} 2 & 0 \\ - 3 & 1 \end{array}]$
141106	求解矩阵方程	[[4,2],[0,1]]+[[5,9],[8,2]]=[[9,x],[8,3]]	$[\begin{array}{c} 4 & 2 \\ 0 & 1 \end{array}] + [\begin{array}{c} 5 & 9 \\ 8 & 2 \end{array}] = [\begin{array}{c} 9 & x \\ 8 & 3 \end{array}]$
141107	求解矩阵方程	[[3,-8,0],[8,2,1]]+x=[[5,3,-9],[2,12,0]]	$[\begin{array}{c} 3 & - 8 & 0 \\ 8 & 2 & 1 \end{array}] + x = [\begin{array}{c} 5 & 3 & - 9 \\ 2 & 12 & 0 \end{array}]$
141108	求解矩阵方程	[[-3,5],[25,-2]]-3[[0,-2],[x,4]]=[[-3,11],[15,-14]]	$[\begin{array}{c} - 3 & 5 \\ 25 & - 2 \end{array}] - 3 [\begin{array}{c} 0 & - 2 \\ x & 4 \end{array}] = [\begin{array}{c} - 3 & 11 \\ 15 & - 14 \end{array}]$
141109	求解矩阵方程	[[4,7],[1,2]]X+[[2,7],[-3,4]]=[[6,2],[-2,3]]	$[\begin{array}{c} 4 & 7 \\ 1 & 2 \end{array}] X + [\begin{array}{c} 2 & 7 \\ - 3 & 4 \end{array}] = [\begin{array}{c} 6 & 2 \\ - 2 & 3 \end{array}]$
141110	求解矩阵方程	[[4,5],[7,9]]x=[[2,-1],[3,2]]	$[\begin{array}{c} 4 & 5 \\ 7 & 9 \end{array}] x = [\begin{array}{c} 2 & - 1 \\ 3 & 2 \end{array}]$
141111	求解矩阵方程	[[4,3],[1,1]]x=[[17,4],[6,2]]	$[\begin{array}{c} 4 & 3 \\ 1 & 1 \end{array}] x = [\begin{array}{c} 17 & 4 \\ 6 & 2 \end{array}]$
141112	求解矩阵方程	[[9,4x+1],[7,4]]=[[2,-1],[3,5]]+[[7,5],[4,-1]]	$[\begin{array}{c} 9 & 4 x + 1 \\ 7 & 4 \end{array}] = [\begin{array}{c} 2 & - 1 \\ 3 & 5 \end{array}] + [\begin{array}{c} 7 & 5 \\ 4 & - 1 \end{array}]$
141113	求解矩阵方程	[[-8,-14,-2x]]-([[-19,17,-1]]+[[14,13,-2]])=[[-3,-44,-9]]	$[\begin{array}{c} - 8 & - 14 & - 2 x \end{array}] - ([\begin{array}{c} - 19 & 17 & - 1 \end{array}] + [\begin{array}{c} 14 & 13 & - 2 \end{array}]) = [\begin{array}{c} - 3 & - 44 & - 9 \end{array}]$
141114	求解矩阵方程	[[d,3],[e,1]]+[[2,f],[2,g]]=[[5,3],[1,2]]	$[\begin{array}{c} d & 3 \\ e & 1 \end{array}] + [\begin{array}{c} 2 & f \\ 2 & g \end{array}] = [\begin{array}{c} 5 & 3 \\ 1 & 2 \end{array}]$
141115	求解矩阵方程	[[5,4],[-3,2]]X=[[10],[-16]]	$[\begin{array}{c} 5 & 4 \\ - 3 & 2 \end{array}] X = [\begin{array}{c} 10 \\ - 16 \end{array}]$
141116	求解矩阵方程	[[-5,x],[y,8]]=[[-5,14],[27,8]]	$[\begin{array}{c} - 5 & x \\ y & 8 \end{array}] = [\begin{array}{c} - 5 & 14 \\ 27 & 8 \end{array}]$
141117	求解矩阵方程	[[7,-1],[3,5]]+x=[[4,5],[8,2]]	$[\begin{array}{c} 7 & - 1 \\ 3 & 5 \end{array}] + x = [\begin{array}{c} 4 & 5 \\ 8 & 2 \end{array}]$
141118	找出函数规则	table[[x,y],[0,-3],[3,-1],[6,1]]	$\begin{array}{c} x & y \\ 0 & - 3 \\ 3 & - 1 \\ 6 & 1 \end{array}$
141119	找出函数规则	table[[x,y],[0,3],[3,15],[6,27]]	$\begin{array}{c} x & y \\ 0 & 3 \\ 3 & 15 \\ 6 & 27 \end{array}$
141120	找出函数规则	table[[x,y],[0,36500],[5,53600],[10,78800]]	$\begin{array}{c} x & y \\ 0 & 36500 \\ 5 & 53600 \\ 10 & 78800 \end{array}$
141121	找出函数规则	table[[x,y],[0,-4],[1,-3],[2,-2]]	$\begin{array}{c} x & y \\ 0 & - 4 \\ 1 & - 3 \\ 2 & - 2 \end{array}$
141122	找出函数规则	table[[x,y],[0.5,-0.5],[0,-2],[2,4]]	$\begin{array}{c} x & y \\ 0.5 & - 0.5 \\ 0 & - 2 \\ 2 & 4 \end{array}$
141123	找出函数规则	table[[x,y],[-1,1/7],[0,1],[1,7]]	$\begin{array}{c} x & y \\ - 1 & \frac{1}{7} \\ 0 & 1 \\ 1 & 7 \end{array}$
141124	找出函数规则	table[[x,y],[1,-15],[2,-45],[3,-135]]	$\begin{array}{c} x & y \\ 1 & - 15 \\ 2 & - 45 \\ 3 & - 135 \end{array}$
141125	找出函数规则	table[[x,y],[1,16],[2,8],[3,4]]	$\begin{array}{c} x & y \\ 1 & 16 \\ 2 & 8 \\ 3 & 4 \end{array}$
141126	找出函数规则	table[[x,y],[1,2],[2,5],[3,8]]	$\begin{array}{c} x & y \\ 1 & 2 \\ 2 & 5 \\ 3 & 8 \end{array}$
141127	找出函数规则	table[[x,y],[1,4],[2,5],[3,6]]	$\begin{array}{c} x & y \\ 1 & 4 \\ 2 & 5 \\ 3 & 6 \end{array}$
141128	找出函数规则	table[[x,y],[1,6],[2,9],[3,12]]	$\begin{array}{c} x & y \\ 1 & 6 \\ 2 & 9 \\ 3 & 12 \end{array}$
141129	找出函数规则	table[[x,y],[1,5],[2,12],[3,31]]	$\begin{array}{c} x & y \\ 1 & 5 \\ 2 & 12 \\ 3 & 31 \end{array}$
141130	找出函数规则	table[[x,y],[1,66],[2,72],[3,82]]	$\begin{array}{c} x & y \\ 1 & 66 \\ 2 & 72 \\ 3 & 82 \end{array}$
141131	找出函数规则	table[[x,y],[1,-7],[2,-28],[3,-63]]	$\begin{array}{c} x & y \\ 1 & - 7 \\ 2 & - 28 \\ 3 & - 63 \end{array}$
141132	找出函数规则	table[[x,y],[1,9],[2,18],[3,36]]	$\begin{array}{c} x & y \\ 1 & 9 \\ 2 & 18 \\ 3 & 36 \end{array}$
141133	找出函数规则	table[[x,y],[-20,-268],[-14,-196],[-8,-124]]	$\begin{array}{c} x & y \\ - 20 & - 268 \\ - 14 & - 196 \\ - 8 & - 124 \end{array}$
141134	找出函数规则	table[[x,y],[2,36],[3,81],[4,144]]	$\begin{array}{c} x & y \\ 2 & 36 \\ 3 & 81 \\ 4 & 144 \end{array}$
141135	找出函数规则	table[[x,y],[2,10],[4,5],[5,4]]	$\begin{array}{c} x & y \\ 2 & 10 \\ 4 & 5 \\ 5 & 4 \end{array}$
141136	找出函数规则	table[[x,y],[2,15],[6,13],[7,9],[8,8],[12,5]]	$\begin{array}{c} x & y \\ 2 & 15 \\ 6 & 13 \\ 7 & 9 \\ 8 & 8 \\ 12 & 5 \end{array}$
141137	求解矩阵方程	[[-2,3],[4,-9]]z=[[-1,6],[17,-30]]	$[\begin{array}{c} - 2 & 3 \\ 4 & - 9 \end{array}] z = [\begin{array}{c} - 1 & 6 \\ 17 & - 30 \end{array}]$
141138	求解矩阵方程	[[2,x],[6,0]]*[[y,3],[-2,2]]=[[1,3],[-6,18]]	$[\begin{array}{c} 2 & x \\ 6 & 0 \end{array}] \cdot [\begin{array}{c} y & 3 \\ - 2 & 2 \end{array}] = [\begin{array}{c} 1 & 3 \\ - 6 & 18 \end{array}]$
141139	找出函数规则	table[[x,y],[5,4],[6,1],[7,-2]]	$\begin{array}{c} x & y \\ 5 & 4 \\ 6 & 1 \\ 7 & - 2 \end{array}$
141140	找出函数规则	table[[x,y],[4,64],[5,100],[6,144]]	$\begin{array}{c} x & y \\ 4 & 64 \\ 5 & 100 \\ 6 & 144 \end{array}$
141141	找出函数规则	table[[x,y],[-3,9],[1,-7],[5,-23]]	$\begin{array}{c} x & y \\ - 3 & 9 \\ 1 & - 7 \\ 5 & - 23 \end{array}$
141142	找出函数规则	table[[x,y],[-4,0.0112],[-2,0.28],[0,7]]	$\begin{array}{c} x & y \\ - 4 & 0.0112 \\ - 2 & 0.28 \\ 0 & 7 \end{array}$
141143	求解矩阵方程	1/2=[[12,-20],[36,-52]]	$\frac{1}{2} = [\begin{array}{c} 12 & - 20 \\ 36 & - 52 \end{array}]$
141144	@WORD के सिस्टम को हल कीजिये	4/(c-2)-3/c<0	$\frac{4}{c - 2} - \frac{3}{c} < 0$
141145	@WORD के सिस्टम को हल कीजिये	12<=5x+2<=27	$12 \leq 5 x + 2 \leq 27$
141146	求出反函数	[[2,7],[5,6]]	$[\begin{array}{c} 2 & 7 \\ 5 & 6 \end{array}]$
141147	转换为区间计数法	x^2+2x>=0	$x^{2} + 2 x \geq 0$
141148	转换为区间计数法	x^2-11x+18>0	$x^{2} - 11 x + 18 > 0$
141149	转换为区间计数法	\|3x+2\|>7	$\| 3 x + 2 \| > 7$
141150	转换为区间计数法	\|4-4x\|<=1	$\| 4 - 4 x \| \leq 1$
141151	转换为区间计数法	(x^2+3)/(2x)>=2	$\frac{x^{2} + 3}{2 x} \geq 2$
141152	求出幂集	A={8,1,2}	$A = {8, 1, 2}$
141153	给定点，求余弦	(( 7)/4,3/4) 的平方根	$(\frac{\sqrt{7}}{4}, \frac{3}{4})$
141154	估算	12.56+12.69	$12.56 + 12.69$
141155	给定点，求余弦	(8,3)	$(8, 3)$
141156	求函数和的定义域	f(x)=4x+5 , g(x)=3x+3	$f (x) = 4 x + 5$ , $g (x) = 3 x + 3$
141157	给定点，求余弦	(-20/29,-21/29)	$(- \frac{20}{29}, - \frac{21}{29})$
141158	给定点，求余弦	(- 11,5) 的平方根	$(- \sqrt{11}, 5)$
141159	求出首项系数	a+8	$a + 8$
141160	以标准式表示	x^2+24x+y^2+10y+160=0	$x^{2} + 24 x + y^{2} + 10 y + 160 = 0$
141161	以标准式表示	x^2+4x-8y+12=0	$x^{2} + 4 x - 8 y + 12 = 0$
141162	以标准式表示	9x^2+4y^2-36x+8y+4=0	$9 x^{2} + 4 y^{2} - 36 x + 8 y + 4 = 0$
141163	以标准式表示	9x^2+9y^2-18x-6y+1=0	$9 x^{2} + 9 y^{2} - 18 x - 6 y + 1 = 0$
141164	求出首项系数	1-2i	$1 - 2 i$
141165	求出首项系数	4w^11-w^12	$4 w^{11} - w^{12}$
141166	求出首项系数	-4xy	$- 4 x y$
141167	求出首项系数	7y^5-y^13+1+6y^10	$7 y^{5} - y^{13} + 1 + 6 y^{10}$
141168	求出首项系数	(2+x)^5	${(2 + x)}^{5}$
141169	求出首项系数	(2x+3)^3	${(2 x + 3)}^{3}$
141170	求出拐点	f(x)=20-12x^2+4x^3	$f (x) = 20 - 12 x^{2} + 4 x^{3}$
141171	以标准式表示	x^2+y^2=2y	$x^{2} + y^{2} = 2 y$
141172	以标准式表示	x^2-6x+3y-3=0	$x^{2} - 6 x + 3 y - 3 = 0$
141173	以标准式表示	y^2+6x-4y-9=0	$y^{2} + 6 x - 4 y - 9 = 0$
141174	以标准式表示	y^2-4x-12y+4=0	$y^{2} - 4 x - 12 y + 4 = 0$
141175	以标准式表示	y^2-4y+12x+4=0	$y^{2} - 4 y + 12 x + 4 = 0$
141176	求出拐点	f(x)=24/(1+3e^(-1.3x))	$f (x) = \frac{24}{1 + 3 e^{- 1.3 x}}$
141177	求出拐点	f(x)=1/3x^3-x	$f (x) = \frac{1}{3} x^{3} - x$
141178	通过一点和y轴截距求出方程	(0,5)-9	$(0, 5) - 9$
141179	通过一点和y轴截距求出方程	(0,-7)	$(0, - 7)$
141180	通过一点和y轴截距求出方程	(0,8)	$(0, 8)$
141181	通过一点和y轴截距求出方程	(0,4)	$(0, 4)$
141182	通过一点和y轴截距求出方程	(0,-2) , m=2	$(0, - 2)$ , $m = 2$
141183	求出反函数	y=6x-2	$y = 6 x - 2$
141184	求出反函数	y=2x-4	$y = 2 x - 4$
141185	求交点	y=2x+10x^2+y^2=65	$y = 2 x + 10 x^{2} + y^{2} = 65$
141186	求交点	y=2x-3 y=-x+3	$y = 2 x - 3$ $y = - x + 3$
141187	求交点	y=8x+3 x=7	$y = 8 x + 3$ $x = 7$
141188	求交点	y=8x-4 x=4	$y = 8 x - 4$ $x = 4$
141189	求交点	y=-9x-5y=-2x+1	$y = - 9 x - 5 y = - 2 x + 1$
141190	求交点	y=3x-4x=9	$y = 3 x - 4 x = 9$
141191	求交点	y=3xy=x^2-4	$y = 3 x y = x^{2} - 4$
141192	求交点	y=4x-3y=-5x-4	$y = 4 x - 3 y = - 5 x - 4$
141193	求交点	y=-5x+1y=3x-2	$y = - 5 x + 1 y = 3 x - 2$
141194	求交点	y=-0.3x^2+3x , -2x+5.5y=19.5	$y = - 0.3 x^{2} + 3 x$ , $- 2 x + 5.5 y = 19.5$
141195	求交点	y=2 xy=3-x 的平方根	$y = 2 \sqrt{x} y = 3 - x$
141196	求交点	x^2+y^2=53(x-5)^2+y^2=58	$x^{2} + y^{2} = 53 {(x - 5)}^{2} + y^{2} = 58$
141197	求交点	x-2y=-4x+2y=8	$x - 2 y = - 4 x + 2 y = 8$
141198	求交点	-x-3y=1x+3y=-1	$- x - 3 y = 1 x + 3 y = - 1$
141199	求交点	xy=6 , x-y=5	$x y = 6$ , $x - y = 5$
141200	求交点	y^2+17y+x^2-3x-18=0y+17+(3x-18)/y=0	$y^{2} + 17 y + x^{2} - 3 x - 18 = 0 y + 17 + \frac{3 x - 18}{y} = 0$