A fun way to remember the derivatives of sine and cosine is to set equal the Real and Imaginary parts of 𝑑/𝑑𝑥 (eⁱˣ )pic.twitter.com/2ErvL6oCKR
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love this! how'd you make it??
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mathematica!
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can i get your thoughts on this? ignore the text and please excuse how i wrote it out, i'm not a mathematician.pic.twitter.com/7Kel5MQLe1
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i'm a bit confused what am i supposed to look at?
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That video is coming straight to my 9 am calculus lecture. Thanks for posting!
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oh wow, awesome!
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"and as you can see i have stolen the purse of this poor old lady"
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I still remember that.... d(x)/x sin(x) = cos(x)
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But d(x)/x cos(x) = -sin(x)
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