Find the sum of the series 1*n+2*(n-1)+3...

Find the sum of the series `1n+2(n-1)+3(n-2)+4(n-3)+....(n−1).2+n.1"` also, find the coefficient of `x^(n-1)` in th cxpansion of `(1+2x+3x^(2)+"...."nx^(n-1))^(2)`.

Similar Questions

Explore conceptually related problems

Find the sum of the series 1*n+2*(n-1)+3*(n-2)+4*(n-3)+"..."+(n-1)*2+,*1 also, find the coefficient of x^(n-1) in th cxpansion of (1+2x+3x^(2)+"...."nx^(n-1))^(2) .

Find the sum of the series 1.n+2(n-1)+3(n-2)+.....n.1 .

Find the sum of the series: 1.n+2.(n-1)+3.(n-2)+...+(n-1).2+n.1

Find the sum of the series: 1. n+2.(n-1)+3.(n-2)++(n-1). 2+n .1.

Find the sum of the series 1xx n+2(n-1)+3xx(n-2)+...+(n-1)xx2+n xx1

Find the sum of the series 1.n + 2 .(n-1) + 3.(n-2) + cdots + ( n-1) .2 + n.1.

Find the sum of the coefficients in the expansion of (1+2x+3x^(2)+...nx^(n))^(2)

Find the sum of the coefficients in the expansion of (1+2x+3x^2+ n x^n)^2dot

Find the sum of the series `1*n+2*(n-1)+3*(n-2)+4*(n-3)+....(n−1).2+n.1"` also, find the coefficient of `x^(n-1)` in th cxpansion of `(1+2x+3x^(2)+"...."nx^(n-1))^(2)`.

Similar Questions

Recommended Questions

Find the sum of the series `1n+2(n-1)+3(n-2)+4(n-3)+....(n−1).2+n.1"` also, find the coefficient of `x^(n-1)` in th cxpansion of `(1+2x+3x^(2)+"...."nx^(n-1))^(2)`.