Tangent Line Approximation
The red line is the tangent line to the blue curve f(x) at the point A. We are comparing the function value with a tangent line approximation.
Drag the slider to adjust the value of b, which is the x-coordinate of the point we are approximating.
Questions:
1) What makes the tangent line approximation more or less accurate?
2) Why is the tangent line approximation always too small?