求y=ln(a^2-x^2)的二阶导数
问题描述:
求y=ln(a^2-x^2)的二阶导数
答
kanbudong
答
y=ln(a²-x²)dy/dx=dln(a²-x²)/d(a²-x²)*d(a²-x²)/dx=1/(a²-x²)*(-2x)=-2x/(a²-x²)d²y/dx²=-2*1/(a²-x²)²*[(a²-x²...