y=x⼀√x눀+1 求dy

2025-06-28 15:09:18
推荐回答(1个)
回答1:

lny=lnx-1/2ln(x^2+1)
y'/y=1/x-x/(x^2+1)=1/[x(x^2+1)]
y'=(x^2+1)^(-3/2)