Grade 12Integral Calculus
Integral 0 to pie mode cos^3x..................... .............
Integral 0 to pie mode cos^3x..................... .............
1 Answer
Arun
Approved Tutor Answer7 Years agoDear student
as cos x is negative for pi/2 to pi
but mod is there.
hence
it can be reduced to
2 integration from 0 to pi/2 cos^3x dx
2 integration ( cos 3x + 3 cosx)/4 dx
(2/4) [sin 3x /3 + 3 sinx ]pi/20
(1/2) [ -1/3 +3]
4/3
Regards
Arun (askIITians forum expert)
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