Ex 7.3, 11 - Chapter 7 Class 12 Integrals
Last updated at May 29, 2018 by Teachoo
Transcript
Ex 7.3, 11 cos 4 2 cos 4 2 = cos 2 2 2 = 1 + cos 4 2 2 = 1 4 1+ cos 4 2 = 1 4 1 2 + cos 4 2 +2 cos 4 1 = 1 4 1+ cos 2 4 +2 cos 4 = 1 4 1+ cos 8 + 1 2 +2 cos 4 = 1 4 1 + 1 2 cos 8 +1 +2 cos 4 = 1 4 1 + 1 2 cos 8 + 1 2 1 +2 cos 4 = 1 4 + 1 2 sin 8 8 + 1 2 +2 sin 4 4 + = 1 4 + 1 2 + 1 16 sin 8 + 1 2 sin 4 + = 1 4 3 2 + 1 16 sin 8 + 1 2 sin 4 + = + + +
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