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April 24, 2024, 03:32:25 pm
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Author Topic: Integration by Substitution  (Read 969 times)  Share 

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mariatachejian

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Integration by Substitution
« on: February 03, 2018, 11:59:54 am »
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Hi there, just wondering if anyone could help me with this integration question.
I attached a screenshot of it.
Thank youuuu
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sprout

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Re: Integration by Substitution
« Reply #1 on: February 03, 2018, 12:36:42 pm »
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For the 3rd line -> 4th line, the -15x^4 disappears because in order to change the integral term to du, we need to multipy du by du/dx. When we multiply by a term, we need to divide to cancel out the effect, so dividing -15x^4 by du/dx removes that term.

Hope that made sense but if it didn't, feel free to ask :)
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mariatachejian

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Re: Integration by Substitution
« Reply #2 on: February 03, 2018, 12:42:08 pm »
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yep makes sense
thanks so much
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