If the sum to infinity of the series: `1-(1+d)(1/3)+(1+2d)(1/9)-(1+3d)(1/27)+...` is `9/16` then find `d`

If the sum to infinity of the series : 1-(1+d)xx1/3+(1+2d)xx1/9 -(1+3d)xx1/27+ ......... is 9/16 , find d .

If the sum to infinity of the series 1- ( 1+d) (1)/(3) +(1+ 2d) (1)/(9) -( 1+3d) .(1)/( 27) + ………" is" (9)/(16) , find d.

If the sum to infinity of the series 3+(3+d)(1)/(4)+(3+2d)(1)/(4^(2))+...oo is (44)/(9) then find d.

If the sum to infinity of the series 3+(3+d) (1)/(4) +(3+2d) (1)/(4^(2))+cdots oo is (44)/(9) then find d.

Find the sum to infinity of the sequence 1,1/3,1/9,………

If the sum to infinity of the series 3+(3+d)1/4+(3+2d)1/(4^2)+......oo is (44)/9 , then find d ddot

If the sum to infinity of the series 3+(3+d)1/4+(3+2d)1/(4^2)+......oo is (44)/9 , then find d ddot

If the sum to infinity of the series : 3+(3 +d) xx 1/4 + (3 + 2d)xx1/4^2 + .......... is 4 8/9 , find d. Also name the series.

The sum of infinity of the progression 9-3+1-(1)/(3)+… is