Mathematics
SMA

31怎麼微分

+ = x, (0,0) 31. tan(x + y) = x, (2.7 32. x cos y = 1 2 COS Y
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Answers

https://socratic.org/questions/how-do-you-find-the-derivative-of-x-tan-x-y

請問圈起來那段怎麼出來的

Ckforce

tan ^2(x+y)=x^2

不懂

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