Finding the tangent line of an inverse function using the original function:
1. Start with the original function and find its derivative.
2. Choose a point on the original function where you want to find the tangent line.
3. Find the slope of the tangent line by evaluating the derivative at that point.
4. Use the point-slope form of a line to write the equation of the tangent line using the slope and the chosen point.
By following these steps, you can find the tangent line of an inverse function using the original function.