$\"\"$

The point is on the graph $\"\"$ is $\"\"$ .

Slope of the tangent line of the function $\"\"$ is $\"\"$ .

The point is on the graph $\"\"$ is $\"\"$ .

The tangent of inverse function is reciprocal of the tangent of the original function.

Thus the slope of inverse function $\"\"$ is $\"\"$ .

$\"\"$

The slope of inverse function is $\"\"$ .