这个.求函数求导过程 

1、
y=1-xe^y
所以,y'=-(xe^y)'=-(e^y+xe^y*y')
===> y'=-e^y-xe^y*y'
===> (1+xe^y)y'=-e^y
===> y'=-e^y/(1+xe^y)
2、
xy=e^(x+y)
===> y+xy'=e^(x+y)*(1+y')
===> xy'-e^(x+y)*y'=e^(x+y)-y
===> [x-e^(x+y)]y'=e^(x+y)-y
===> y'=[e^(x+y)-y]/[x-e^(x+y)]
3、
y=[1+(1/x)]^x
===> lny=xln[1+(1/x)]
===> (1/y)y'=ln[1+(1/x)]+x*/[x+(1/x)]*[1-(1/x²)]
===> (1/y)y'=ln[1+(1/x)]+[(x²-1)/(x²+1)]
===> y'={ln[1+(1/x)]+[(x²-1)/(x²+1)]}*y
4、
y=(sinx)^cosx
===> lny=cosxln(sinx)
===> (1/y)y'=-sinxln(sinx)+cosx*(1/sinx)*cosx
===> (1/y)y'=-sinxln(sinx)+cosx*cotx
===> y'=[-sinxln(sinx)+cosx*cotx]*y
f(x)=e^(3x-2)
所以,f'(x)=e^(3x-2)*3
所以,f''(x)=e^(3x-2)*9
则,f''(1)=9e