ye^x+Iny=0隐函数y对x的导数

问题描述:

ye^x+Iny=0隐函数y对x的导数

两边分别对x求导,y看做x的函数:(y*e^x + lny)' = 0=> y' * e^x + y*e^x + (1/y)*y' = 0=> (e^x + 1/y)*y' = -y*e^x=> y' = -y*e^x / (e^x + 1/y)整理得:y' = -y^2 * e^x / (y*e^x + 1) (乘数符号和指数符号要看清...