a^g(x)求导 g(x)=lg(1+ax)
问题描述:
a^g(x)求导 g(x)=lg(1+ax)
答
[a^g(x)]'
=a^g(x)*lna*[a^g(x)]'
=a^g(x)*lna*[1/ln10(1+ax)]*(1+ax)'
=a^g(x)*lna*a/[ln10(1+ax)]
=a^g(x)*lga*a/(1+ax)]