If the coefficient of x^7in[a x^2-(1/(b ...

If the coefficient of `x^7in[a x^2-(1/(b x^2))]^(11)` equal the coefficient of `x^(-7)` in satisfy the `[a x-(1/(b x^2))]^(11), then a and b` satisfy the relation a. `a+b=1` b. `a-b=1` c. `ab=1` d. `a/b=1`

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If the coefficient of x^7in[a x^2-(1/(b x^2))]^(11) equal the coefficient of x^(-7) in satisfy the [a x-(1/(b x^2))]^(11),then a a n d b satisfy the relation a+b=1 b. a-b=1 c. b=1 d. a/b=1

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

If the coefficient of x^10 in (ax^2 + (1)/(bx))^11 is equal to the coefficient of x^(-10) in (ax - (1)/(bx^2))^11 then show that ab = -1

the coefficient of x^(7) in (ax - b^(-1) x^(-2))^(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^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 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 (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 A and B are the coefficients of x^n in the expansion (1 + x)^(2n) and (1 + x)^(2n-1) respectively, then

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