S (2x+1)e^((x^2)+x) ?? the whole lecture section is missing from this section in my book, :-/ go figure.
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Put x^2 + x = t So (2x + 1)dx= dt Integration now is $\displaystyle \int e^tdt$ $\displaystyle = e^t+c$ $\displaystyle = e^{x^2+x}+c$ any more help required
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