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If in the expansion of (1+x)^(m)(1-x)^(n...

If in the expansion of `(1+x)^(m)(1-x)^(n)` the coefficients of x and `x^(2)` are 3 and -6 respective then m is

A

6

B

9

C

12

D

24

Text Solution

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The correct Answer is:
C
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MODERN PUBLICATION-MOCK TEST PAPER -IV-SELECT THE CORRECT ANSWER
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  11. The number of solution of the eqution |cot x|=cot x+(1)/(sin x)(0 le x...

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  12. cot^(-1)(21) +cot^(-1)(13)+co^(-1)(8)=

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