| Steps |
Key Sequence |
Screens |
| 1. Input Function, Piecewise-Defined Function, or Parametric Equation. |
Press DIAMOND key, then F1 key (for Y=) |
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Type the function |
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| 2. Graph |
Press DIAMOND key, then F3 key |
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| 3. Find Tangent Line |
Press F5 |
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Press ALPHA, then = key (for Tangent) |
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| |
Type in value for x or trace function until you reach the value for x |
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| Note: In this case, we are finding tangent line to curve at x = 3. |
| Note: For parametric equations, type in value for t or trace function until you reach the value for t. |
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Press ENTER |
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| Note: In this case, the equation of the tangent line to curve at x = 3 is
y = –6x + 14. |