Question

求曲线y=-x^2+1在点(1,0)处的切线方程和法线方程

Answer 1

y`=-2x

x=1

y`=k=-2

切线y-0=-2(x-1)

y=-2x+2

法线 k1=1/2

y=1/2(x-1)

2y=x-1