MATLAB求隐函数所确定的函数的导数或偏导

作者:风筝 | 创建时间: 2023-08-08
MATLAB求隐函数所确定的函数的导数或偏导

操作方法

>> syms x y; >> df_dx=diff(cos(x+sin(y))-sin(y),x) df_dx = -sin(x + sin(y)) >> df_dy=diff(cos(x+sin(y))-sin(y),y) df_dy = - cos(y) - sin(x + sin(y))*cos(y) >> dy_dx=-df_dx/df_dy dy_dx = -sin(x + sin(y))/(cos(y) + sin(x + sin(y))*cos(y))

>> pretty(dy_dx) sin(x + sin(y)) - ------------------------------- cos(y) + sin(x + sin(y)) cos(y)

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