计算:x·x^n+2-x^n·x^3
计算(x^(2n)+x^n+1)(x^(3n)-x^(2n)+1)
计算:1/(x-1)+1/(x-1)(x-2)+1/(x-2)(x-3)+.+1/(x-n)(x-n-1)
计算:(x^3)^n÷x^2n÷x^n-1
计算x^3n/(x^2-1)-x^2n/(x^n+1)-1/(x^n-1)+1/(x^n+1)
c语言编程.计算级数前n项的和:1+x+x*x/2!+x*x*x/3!+...+x的n次方/n!.
计算【-2(-x^n-1)】^3
计算(-x)^2n十1.(-x)^n+1
已知x^m=3x^n=2,请计算x^(2m+3n)
计算级数s=1+x+x^2/2!+x^3/3!+···+x^n/n!.并编写main函数调用sum函数
计算:(m+2n)/(n-m)+n/(m-n)-2m(n-m)和[(x+2)/(x×x-2x)-(x-1)/(x×x-4
8.已知(x^3n-2)²·(x^2n+4)÷x^n=x^2n-5,求n的值.
输入x,n,计算x-x^2/2!+x^3/3!+.+(-1)^(n-1)*x^n/n!的值.错在哪?