Integration
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4A) Determine the integral x /(square root of x^2+4) dx by u substitution.
4B) Determine the integral dx /(square root of x^2+4)
4C) Determine the integral dx / x^2+4
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Integrals are found.
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4A) Determine the integral x /(square root of x^2+4) dx by u substitution.
Let u = x^2
2x.dx = du
I will use "I" for the Integral sign.
Then, I [ x /(square root of x^2+4) ]
= (1/2) * I [ du/(square root of u+4) ]
= (1/2) * (square root of u+4) / (1/2) = (square root of ...
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