Find the coefficients of `x^7` in `(a x^2+1/(b x))^(11)a n dx^(-7)in(a x^-1/(b x^2))^(11)` and find the relation between `aa n db` so that coefficients are equal.

Find the coefficients of x^7 in (a x^2+1/(b x))^(11)and x^(-7)i n(a x-1/(b x^2))^(11) and find the relation between a and b so that coefficients are equal.

Find the coefficient of x^7 in (1+ x^2)^4 (1 + x)^7

the coefficient of x^(7) in (ax - b^(-1) x^(-2))^(11) is

Find the coefficient of x^(7) in the expansion of (ax^(2) + (1)/(bx))^(11) . (ii) the coefficient of x^(-7) in the expansion of (ax + (1)/(bx^2))^(11) . Also , find the relation between a and b , so that these coefficients are equal .

Find the coefficient of x^7 in the expansion of (3x^2+ 1/(5x))^11

Find (a) the coefficient of x^7 in the epansion of (ax^2+1/(bx))^11 (b) The coefficient of x^(-7) in the expansion of (ax^2+1/(bx))^11 Also , find the relation between a and b, so that these coefficients are equal .

If the coefficient of x^7 in (ax^2+1/(bx))^11 is equal to the coefficient of x^-7 in (ax-1/(bx^2))^11 then

The coefficient of x^4 in (1+x+x^2+x^3)^11 is

Find the coefficient of x^7 in ( ax^(2) + (1)/( bx) )^(11) and the coefficient of x^(-7) in (ax + (1)/(bx^(2) ))^(11) . If these coefficients are equal, find the relation between a and b .

Find the coefficients of x^(32)a n dx^(-7) in the expansion of (x^4-1/(x^3))^(15)dot