pi+(3)/(4)+(7)/(16)+(15)/(64)+(31)/(256)+....." to infinity "

The sum of the series 1+(3)/(4)+(7)/(16)+(15)/(64)+(31)/(256)+.... to infinite

Sum of the following series (i) 1+(2)/(2)+(3)/(2^2)+(4)/(2^3)+ ……..to n terms (ii) 1+(3)/(4)+(7)/(16)+(15)/(64)+(31)/(256)+………. to infinity.

The nth term of AGP series (1)/(4)+(3)/(16)+(5)/(64)+(7)/(256).... is

(3)/(4)+(15)/(16)+(63)/(64)+.........nterms

The sum of the first 20 terms of the series 1+(3)/(2)+(7)/(4)+(15)/(8)+(31)/(16)+... is:

16/(2!)+(64)/(3!) + (256)/(4!) + ..... oo =

Find the sum to infinity in each of the following G.P (-3)/(4), (3)/(16), (-3)/(64) ……..

"sin"^(4)(pi)/(16) + "sin"^(4) (3pi)/(16) + "sin"^(4) (5pi)/(16) + "sin"^(4) (7pi)/(16)=