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How to prove d/dx sinx = cosx ?
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Original post by Teenage Hype
Can anyone explain #2 to me please? Not sure how to get from the second last line to the last line
http://www.ctralie.com/Teaching/Euler/
http://www.ctralie.com/Teaching/Euler/
For it must be true that (can be shown via solving the differential equation such that ) and since we get:
where
(edited 7 years ago)
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