y^2=2px2yy'=2p设切点(x0,y0)k=p/y0切线方程:y=p/y0*(x-x0)+y0希望能帮到你,祝学习进步O(∩_∩)O,也别忘了采纳!
y = 2px y ' = 2p过(x0,y0)的切线方程是y = 2p(x-x0)+y0
yy0=2p*[(x+x0)/2]