find the coefficient of x^5 in (x-1)*(x^2-2)*(x^3-3).............. (x^100-100)
aviralsangal@gmail.com wrote: > find the coefficient of x^5 in (x-1)*(x^2-2)*(x^3-3).............. > (x^100-100) > To be civilized consider (x^6 -6)*(x^7-7)* ... * (x^100 -100) Notice that except for the constant term all terms are of degree>5.