d^n+1/dx^n+1 x^n=?

  ans will be zero.

i.e if n=1 then from question;

d^2\dx^2 (x)

so it is 2nd deriva. form.the 2nd deriv. of x will be 0.

and so on take any value of n and perform their derivative form. the ans. will be 0.

i posted this question 1mnth ago.i didnt get reply. so i myself posted the answer.   same on u iitian..............