# Math Help - Find equation of tangent line to the function at given point.

1. ## Find equation of tangent line to the function at given point.

Find equation of tangent line to the function at given point.

2. Originally Posted by rod789
Find equation of tangent line to the function at given point.

*sigh* I assume rad(x) means $\sqrt{x}$.

Use the standard model y - y1 = m(x - x1).

Substitute (1, 1) for (x1, y1) and m = g'(1).

Note: $\frac{1}{\sqrt{x}} = \frac{1}{x^{1/2}} = x^{-1/2}$.