If |x| `lt 1, y = x - x^(2) + x^(3) - x^(4) + ….. `, the value of x in terms of y is

If (x + 3)/(x - 3) = y , what is the value of x in terms of y?

If 0 lt x lt 1 and y = x - x^(2) + x^(3) - x^(4) + ....... infty then y + y^(2) + y^(3) + ......... infty is equal to

If y=2x+3x^2 + 4x^3 +…, then x I terms of y is

If |x|lt1 and y=x-(x^(2))/(2)+(x^(3))/(3)-(x^(4))/(4)+... , then x =

If |x|lt1 and y=x-(x^(2))/(2)+(x^(3))/(3)-(x^(4))/(4)+... , then x =

If 0 lt x lt 1 and y=(1)/(2) x^(2) +(2)/(3) x^(3) +(3)/(4) x^(4) + ……. , then the vlaue of e^(1+y) at x=(1)/(2) is :