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Homework Help
Calculus and Beyond Homework Help
Integrate ##\int\sqrt{4+x^2} dx##
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[QUOTE="chwala, post: 6824421, member: 287397"] This is a textbook question...the steps to solution are pretty easy...they indicated use of; ##x=2\sinh u## that will realize $$\int \sqrt{4+x^2} dx=\int 2\cosh u⋅ 2\cosh u du=4\cosh^2 u du$$ ...from here the steps are pretty clear up to the required solution. Ok to my question now; Could we also use; ##x=2\cosh u## instead of ##x=2\sinh u##? Cheers [/QUOTE]
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Calculus and Beyond Homework Help
Integrate ##\int\sqrt{4+x^2} dx##
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