Integration by Parts Example 3
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Uploader Comments (TheIntegralCALC)
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All Comments (84)
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"The integral of sin(x) = - cos(x)... which is a.... formula." Lololol
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That's why in some countries women cover their face, so you can focus on what matters. Excellent job! Only try some harder examples.
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Great Job! I'm your biggest fan.
I have a comment though. The differential of u, du, is equal to the differential of x, dx, ie. du=dx, and dv=sin(x) dx .
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this is gonna end at a pornographic website.
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Will you marry me?
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i think i am your biggest fan(great job ma)thanks
buchianoh 5 days ago
@buchianoh Awesome!! You're welcome!! :D
TheIntegralCALC 5 days ago
my entire reading week calc studying consisted if watching your videos :) more useful than studying my notes. keep up the great work :)
mage1413 1 week ago
@mage1413 So glad you found them useful! :)
TheIntegralCALC 6 days ago
Hi, can i ask if there's a method to determine 'u'?
I was taught today in lecture this:
Logarithmic
Inverse Trigonometric
Algebraic
Trigonometric
Exponential
It's like using this set of words (in order) to determine the 'u' for instance in xln(x). The ln(x) appears before the algebraic (x) and then we take 'u' as ln(x) instead.
I'd just love to know if this really works for all the integration by parts problems.
sierratwo1 1 month ago
@sierratwo1 It works for almost all u-substitution problems, but there are a few rare instances where it won't work perfectly. Definitely use it as a guide though! :)
TheIntegralCALC 1 month ago 2