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Grade: 12

                        

Find the value of the integral(-p÷2)and (p÷2) v(cos x-cos ³x)dx

6 years ago

Answers : (1)

Sunil Raikwar
askIITians Faculty
45 Points
							cosx-cos3x=cosx(1-cos2x)=cosx.sin2x{this is an even function}
put sinx=t then cosxdx=dt
so required integral is
2integral{limit 0 to 1}t2dt=2[t3/3]01=2/3

ThanKs & Regards
Sunil Raikwar
askIITians faculty
6 years ago
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