si·nu·soi·dal adj \ˌsīn-yə-ˈsȯi-dəl, ˌsī-nə-\
: of, relating to, shaped like, or varying according to a sine curve or sine wave
— si·nu·soi·dal·ly adverb
like honestly.
start with a function that can be expressed as the product of two functions, u and v.
uv
take the derivative of that function
(uv)’=u’v+uv’
so
u’v=(uv)’-uv’
Integrate that shit
∫ u’v = ∫(uv)’ - ∫uv’
and of course the ∫(uv)’ is just uv.
∫ u’v = uv - ∫uv’
WHAT
I appreciate this post. I appreciate integration by parts.
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