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

• October 25th 2008, 11:29 AM
rod789
Find equation of tangent line to the function at given point.
Find equation of tangent line to the function at given point.

• October 25th 2008, 01:13 PM
mr fantastic
Quote:

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