几种平面曲线切线方程的求解方法

Some Solutions to the Plane Curve of the Tangent Equation

平面曲线的方程通常有直角坐标方程、参数方程、极坐标方程等三种形式,结合平面曲线方程的三种形式,给出了求平面曲线切线方程的点法式、改微求切式、点向式、极坐标变换法等四种方法。

The equation of plane curve usually has three forms:rectangular coordinate equation,parameter equation and polar coordinate equation.Combined with the three forms of plane curve equation,four methods are given to solve the tangent equation of plane curve,including point normal method,replacing curve by straight method,point direction method and polar coordinate transformation method.