√(1+3x^2)求导
问题描述:
√(1+3x^2)求导
答
[(1+3x^2)^(1/2)]'
=1/2*(1+3x^2)^(1/2-1)*(1+3x^2)'
=1/[2√(1+3x^2)]*(6x)
=3x/√(1+3x^2)