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y=f(x)由方程y cos(x-y)=2x确定求dy/dx
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推荐答案 2016-08-14
y+cos(x-y)=2x
两边æ±å¯¼å¾å°ï¼
y'-sin(x-y)(1-y')=2
y'[1+sin(x-y)]=2+sin(x-y)
æ以:
dy/dx=[2+sin(x-y)]/[1+sin(x-y)].
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