y=y*a[i][i];n=n 1;line(x 2,y 96,x 68,y 96);
若全集I={(x,y)|x,y∈R},集合M={(x,y)|(y-3)/(x-2)},N{(x,y)|y=x=1},则(
设全集I={(x,y)|x,y∈R},集合M={(x,y)|y-3x-2=1},N={(x,y)|y≠x+1},那∁I(
设全集I={(x,y)|x,y∈R} M={(x,y)|y-3/x-2=1} N={(x,y)|-y≠x+1} 则CiM
若1+2+3+...+n=a,求代数式(x^ny)(x^n-1y^2)(x^n-2y^3)...(x^2y^n-1)(x
设集合M={y|y=|cos^2-sin^2|,x属于R},N={x||x-(1/i)|
已知a|m=x,a|n=y,a|m+n=z,求i
设集合I={(x,y)|x属于R,y属于R} ,集合M={(x,y)|y-3/x-2=1} ,N={(x,y)|y不等于
若[-3(x+y)^m*(x-y)^2n]^2*[-(x+y)^2]=-a(x+y)^10*(x-y)^12-n,求m,
A={y|y=x2-4x+6,y属于N},B={y|y=-x2-2x+18,y属于N},求A交B.
y[n]=x[n]+0.5x[n-1]+0.7y[n-1]-0.1y[n-2] 怎么用matlab求y[n]的方程?或者
第一章:集合部分设全集I={(x,y)| x,y∈R },集合M={(x,y)| y-3/x-2=1}N={(x,y)|
若1+2+……+n=k,试探求:(x^n*y)*(x^(n-1)*y^2)*(x^(n-2)*y^3)*……*(x*y^