Sum to `oo` terms of the series,:
`2+5x+8x^(2)+11x^(3)+…………….,|x|lt1`.

Find the sum to n terms of the series: 1+2x+3x^(2)+4x^(3)+......

If |x| lt 1 , then find the sum of the serires 2+ 4x + 6x^(2) + 8x^(3) + …….. .

Sum to n terms of the series 1+(1+x)+(1+x+x^(2))+(1+x+x^(2)+x^(3))+

Find the 10th term of the sequence 2x,5x^(3) , 8x^(5), 11x^(7), …

Sum of the series 1+2^2x +3^2x^2 + 4^2x^3 …….to oo , |x| < 1 is :

Find sum to n terms of the series 3+5X(1)/(4)+7X(1)/(4^(2))+...

The sum of n terms of the series (1)/(1 + x) + (2)/(1 + x^(2)) + (4)/(1 + x^(4)) + ……… is

Find the sum to n terms of the series: (x+1/x)^(2)+(x^(2)+1/(x^(2)))^(2)+(x^(3)+1/(x^(3)))^(2) + ……

If |x| lt 1 ,then the sum of the series 1 + 2x + 3x^(2) + 4x^(2) + ....infty will be

Find the sum to n terms of the following series: (x+(1)/(x))^(2)+(x^(2)+(1)/(x^(2)))^(2)+(x^(3)+(1)/(x^(3)))^(2)+(x^(4)+(1)/(x^(4)))^(2)+