Home
Class 12
MATHS
If the coefficient of x^(7) in the expan...

If the coefficient of `x^(7)` in the expansion of `(ax^(2)+b^(-1)x^(-1))^(11)` is equal to the coefficient of `x^(-7)` in `(ax-b^(-1)x^(-2))^(11)`, then ab equals:

A

1

B

2

C

3

D

4

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • BINOMIAL THEOREM

    MODERN PUBLICATION|Exercise MCQ.s (LEVEL-II)|55 Videos

  • BINOMIAL THEOREM

    MODERN PUBLICATION|Exercise LATEST QUESTION FROM AIEEE/JEE EXAMINATIONS|6 Videos

  • AREA UNDER CURVES

    MODERN PUBLICATION|Exercise Recent Competitive Questions (Question from karnataka CET & COMED)|9 Videos

  • CARTESIAN SYSTEM OF RECTANGULAR CO-ORDINATES AND STRAIGHT LINES

    MODERN PUBLICATION|Exercise Recent Competitive Questions (Questions from Karnataka CET & COMED)|8 Videos

Similar Questions

Explore conceptually related problems

The coefficient of x^(6) in the expansion of (1+x+x^(2))^(-3) is

The coefficient of x^(3) in the expansion of (1-x+x^(2))^(5) is

The coefficient of x^(5) in the expansion of (x^(2)-x-2)^(5) is

Find the coefficient of x^8 in the expansion of (x^2-1/x)^(10)

The coefficient of x^(32) in the expansion of (x^(4)-(1)/(x^(3)))^(15) is

The coefficient of x^(7) in the expansion of (1-x-x^(2)+x^(3))^(6) is:

The coefficient of x^(n) in the expansion of (1+x)(1-x)^(n) is

The coefficient of x^(4) in the expansion of ((x)/(2)-(3)/(x^(2)))^(10) =

The coefficient of x^(5) in the expansion of (1+x^(2))^(5).(1+x)^(4) is

The coefficient of x^(4) in the expansion of (1+x+x^(2)+x^(3))^(n) is: