- #1
grzz
- 1,006
- 15
The graph of y = x - 1 CUTS the x-axis at x = 1 while the graph of y = x2- 1 TOUCHES the x-axis at x = 1.
The point at which the tangent touches the curve is shown mathematically by having two solutions of x, i.e. x = 1 (twice).
Is there some deeper meaning to these two identical solutions for x?
The point at which the tangent touches the curve is shown mathematically by having two solutions of x, i.e. x = 1 (twice).
Is there some deeper meaning to these two identical solutions for x?