Grade 11Integral Calculus
What is the integration x^3×cosx^3dxPlease give me the answer
1 Answer
Vikas TU
write x^3×cosx^3dx as:
x*x^2*cosx^3dx
=> let x^2 = u
2xdx = du
I = u*cos(u^(3/2))
Apply now by – part easily then after substitute u in the end.
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