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Mathematics 7 Online
OpenStudy (el_arrow):

Integral problem

OpenStudy (el_arrow):

\[\int\limits_{0}^{1} (x^e+e^x)\]

OpenStudy (el_arrow):

have no idea how to do this one

OpenStudy (anonymous):

it is a trick

OpenStudy (el_arrow):

whats the trick?

OpenStudy (anonymous):

trying to confuse you with \(x^e\)

OpenStudy (anonymous):

the anti derivative of \(x^n\) is \[\frac{x^{n+1}}{n+1}\]

OpenStudy (solomonzelman):

\[\int\limits_{ }^{ } e^x~dx=e^x~~~~~~~an d~~~~~~\int\limits_{ }^{ }x^e~dx=\frac{x^{e+1}}{e+1}\]

OpenStudy (anonymous):

put \(n=e\) and you get \[\frac{x^{e+1}}{e+1}\]

OpenStudy (solomonzelman):

then subtract the sums.

OpenStudy (el_arrow):

okay i think i got it

OpenStudy (solomonzelman):

can you say the answer, just in case?

OpenStudy (el_arrow):

the final answer is 1/(e+1) + e-1

OpenStudy (el_arrow):

i havent worked it out yet i just got it from the back of my book

OpenStudy (solomonzelman):

yes

OpenStudy (el_arrow):

thank you solomonzelman

OpenStudy (solomonzelman):

I think that plugging in the upper and lower limits and subtracting is not a problem..... anytime!

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