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

In the sum to infinity of the series 3+(3+x) (1)/(4) + (3+2x)(1)/(4^(2))+ ..... "is" (44)/(9) find x.

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.

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 3+(3+d) (1)/(4)+(3+2 d) (1)/(4^(2)) +.., oo is (44)/(9) then 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) xx 1/4 + (3 + 2d)xx1/4^2 + .......... is 4 8/9 , find d. Also name the series.

If 3 + (3 + d) (1)/(4) + (3+ 2d) (1)/(4^(2)) + …oo= 8 then 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 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 + 5x + 7x^(2) + …oo = (44)/(9) then x=