If the expansion in power of x of the function
`(1)/(( 1 - ax)(1 - bx)) is a_(0) + a_(1) x + a_(2) x^(2) + a_(3) a^(3) + …, ` then `a_(n)` is

If the expansion in power of x of the function (1)/(( 1 - ax)(1 - bx)) is a_(0) + a_(1) x + a_(2) x^(2) + a_(3) x^(3) + …, then a_(n) is

If the expansion in power of x of the function (1)/(( 1 - ax)(1 - bx)) is a_(0) + a_(1) x + a_(2) x^(2) + a_(3) x^(3) + …, then a_(n) is

If the expansion in powers of x of the function (1)/((1-ax)(1-bx)) is a_(0)+a_(1)x+a_(2)x^(2)+a_(3)x^(3)+ .. . . then a_(n) is:

If the expansion in powers of x of the function (1)/((1-ax)(1-bx)) is a_(0)+a_(1)x+a_(2)x^(2)+a_(3)x^(3)+.....+a_(n) then coefficient of x^(n) is

If the expansion in powers of x of the function 1/[(1-ax)(1-bx)] is a a_(0)+a_(1)x+a_(2)x^(2)+a_(3)x^(3)+..., then a_(n) is (b^(n)-a^(n))/(b-a) b.(a^(n)-b^(n))/(b-a) c.(b^(n+1)-a^(n+1))/(b-a) d.(a^(n+1)-b^(n+1))/(b-a)

Let (1 + x^(2))^(2) (1 + x)^(n) = a_(0) + a_(1) x + a_(2) x^(2) + … if a_(1),a_(2) " and " a_(3) are in A.P , the value of n is

Let (1 + x^(2))^(2) (1 + x)^(n) = a_(0) + a_(1) x + a_(2) x^(2) + … if a_(1),a_(2) " and " a_(3) are in A.P , the value of n is