Question

请问这道题的参数是怎么消掉的我理解能力差,麻烦讲清楚点

Answer 1

P(4m²+1,4m)

令P(x,y):

x = 4m²+1

y = 4m,m = y/4

带入x = 4m²+1:x = 4(y/4)²+1 = y²/4 +1

x = y²/4 + 1