TS EAMCET · Maths · Binomial Theorem
If and are respectively the coefficient of and in the expansion of
then
- A
- B
- C
- D
Answer & Solution
Correct Answer
(B)
Step-by-step Solution
Detailed explanation
E=x13+12x1321, x>0 ∙p= Coefficient of x-3 in E ⇒p=Cr21x1321-r12x-13r, where Tr+1 is the corresponding term So, 21-r3-r3=-3 ⇒21-2r=-9 ⇒r=15 So, p=C15211215 ∙q= Coefficient of x-5 in E ⇒q=C321x1321-r12x-13r, where Tr+1 is the corresponding…
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