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Ex 7.11
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Ex 7.11, 20 (MCQ) Important You are here
Ex 7.11, 21 (MCQ) Important
Last updated at March 16, 2023 by Teachoo
Ex 7.11, 20 The value of β«_((β π)/2)^(π/2)βγ(π₯^3+π₯ πππ π₯+tan^5β‘γπ₯+1γ ) ππ₯γ (A) 0 (B) 2 (C) π (D) 1 β«_((βπ)/2)^(π/2)βγ (π₯^3+π₯ πππ π₯+tan^5β‘γπ₯+1γ ) ππ₯γ We know that β«_(βπ)^(+π)βγπ(π₯) ππ₯γ={β(0, ππ π(βπ₯)=βπ(π₯)@&2β«_0^πβγπ(π₯) ππ₯γ, ππ π(βπ₯)=π(π₯) )β€ Thus, our equation becomes β«_((β π)/2)^(π/2)βγ(π₯^3+π₯ πππ π₯+tan^5β‘γπ₯+1γ ) ππ₯γ = β«_0^(π/2)βγ0 ππ₯+β«_0^(π/2)βγ0 ππ₯+β«_0^(π/2)βγ0 ππ₯+πβ«_π^(π /π)βπ πγγγ = 2β«_0^(π/2)βππ₯ = 2 [π₯]_0^(π/2) = 2(π/2β0) =π Thus, correct option is C