http://www.Media4MathPlus.com In this TI-Nspire CX tutorial we go through the steps of constructing the line tangent to any curve. The equation of the tangent line displays and redisplays as the point is moved along the curve.

2. Summary
• In this tutorial, you’ll be graphing the
tangent line to a curve. The steps in the
tutorial include:
– Creating a Graph Window
– Graphing a Curve
– Adding a Tangent Line

3. Create a New Document

4. Insert a Graph Window

5. Graph a Function

6. Graph a Function
Input the equation for the function. In this case a parabola,
but this will work with any function.

7. Graph a Function
After pressing Enter, you’ll see the graph of the function.

8. Find the Tangent
Access the Tangent line tool: Menu > Geometry > Points &
Lines > Tangent.

9. Find the Tangent
Move the cursor over the graph of the function.

10. Find the Tangent
Click once on the graph to see the equation of the tangent
line at that point.

11. Find the Tangent
Click again to place the point on the graph. You’ll see the
equation of the tangent line.

12. Find the Tangent
Move the point to different locations along the graph. You’ll
see the equation change.