The function is .
Graph:
Graph the function .
Observe the graph:
The slope of the function at appears to be
.
The function is .
Apply derivative on each side with respect to .
Power rule of derivatives: .
Find .
Substitute in the
.
.
The slope of the tangent line is the derivative of the function at a point.
Slope of the tangent line is .
Slope of the tangent line is .