Hi , after a substitution with x=3 cos u the answer in the text gives the following...see image I can't see how it tidies up to u cos u thank you
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Could you please post all of the original question?
the question is.. by considering the substitution x=3cos u ,evaluate
Originally Posted by minicooper58 the question is.. by considering the substitution x=3cos u ,evaluate Let , and noting that when and when , the integral becomes which you can now solve using Integration by Parts
The terms on the top are multiplied together so 3sinu cancels out.
Originally Posted by minicooper58 the question is.. by considering the substitution x=3cos u ,evaluate After substitution integral becomes : which can be solved using integration by parts...
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