- #1
danne89
- 180
- 0
Please help me prove that it doesn't exist any other intersect point than P(x0, x0^2) on the y=2^2 curve, for the tangent line in the very same point.
My work:
y=x^2
l(x)=f¨(x0)(x-x0)+x0^2
= 2x0(x-x0)+x0^2
= 2x0x-2x0^2 + x0^2
= 2x0x - x0^2
My work:
y=x^2
l(x)=f¨(x0)(x-x0)+x0^2
= 2x0(x-x0)+x0^2
= 2x0x-2x0^2 + x0^2
= 2x0x - x0^2