求y=lg(x-(x^2-a^2)^(1/2))的导数~~要过程~
问题描述：
求y=lg(x-(x^2-a^2)^(1/2))的导数~~要过程~
答
y'=[1/(x-(x^2-a^2)^(1/2))]*(1-x/(x^2-a^2)^(1/2)]
求y=lg(x-(x^2-a^2)^(1/2))的导数~~要过程~
y'=[1/(x-(x^2-a^2)^(1/2))]*(1-x/(x^2-a^2)^(1/2)]