来自宋亚民的问题
【y=(4-x3+Inx)(cosx+sinx)请讲这道题求导,x3是x的3次方,】
y=(4-x3+Inx)(cosx+sinx)
请讲这道题求导,x3是x的3次方,
1回答
2020-12-27 00:37
【y=(4-x3+Inx)(cosx+sinx)请讲这道题求导,x3是x的3次方,】
y=(4-x3+Inx)(cosx+sinx)
请讲这道题求导,x3是x的3次方,
y′=[(4-x³+Inx)(cosx+sinx)]′=(4-x³+Inx)′(cosx+sinx)+(4-x³+Inx)(cosx+sinx)′=(4′-x³′+Inx′)(cosx+sinx)+(4-x³+Inx)(cosx′+sinx′)=(-3x²+1/x)(cosx+sinx)+(4-x³+Inx)(...