Question

参数方程变普通方程．．．在线等．．

Answer 1

x=a/2(t+1/t)

y=b/2(t-1/t),即

2x/a=t+1/t

2y/b=t-1/t

俩边平方相减得

x^2/a^2-y^2/b^2=1