Evaluate the indefinite integral. (Remember to use ln(abs(u)) where appropriate.)
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Originally Posted by Jgirl689 Evaluate the indefinite integral. (Remember to use ln(abs(u)) where appropriate.) . Now make the substitution in the denominator.
u = e^9x (1/9) du = e^9x dx int((1 / u + 3)du) ln|u + 3| ln|e^9x + 3| + C
Originally Posted by Locke u = e^9x (1/9) du = e^9x dx int((1 / u + 3)du) ln|u + 3| ln|e^9x + 3| + C Correct. But since for all , you don't need the absolute value.
I put that in my answer thing, and it was marked wrong, should I use log instead?
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