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求函数导数e^x-e^y=sin(xy)
人气:247 ℃ 时间:2020-03-19 11:31:25
解答
e^x-e^yy`=cos(xy)(1+y`)
e^x-e^yy`=cos(xy)+y`cos(xy)
e^x-cos(xy)=y`cos(xy)+e^yy`
y`=[e^x-cos(xy)]/[cos(xy)+e^y]
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