Question

已知函数y=y(x)由e的xy次方+tan(xy)确定,求dy|x=0

Answer 1

y = e^xy+tan（xy)

y' = (xy)'*e^xy +(xy)' *(1/(1+(xy)^2) = (y+xy') *(e^xy+(1/(1+(xy)^2))

然后分离出y'就可以了,打字太复杂,自己算下吧