Steps |
Key Sequence |
Screens |
1. Input Function |
Press DIAMOND key, then F1 key (for Y=) |
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Type the function |
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Method 1: Using home screen. |
2. Go to Home screen |
Press 2nd, then ESC |
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3. Select nInt Function |
Press F3 |
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Press ALPHA, then ( key (for nInt() |
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NOTE: Alternatively, you can use the integrate function, i.e., ALPHA, then 2. |
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4. Type in Integrand (i.e., the Function) |
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Note: You can either type in the function directly
(e.g., 5 – 2x2 + x3) OR, if you followed
step 1 above, use y1(x) |
4. Type in Independent Variable |
Press comma key, then x |
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5. Type in Lower Limit |
Press comma key, then value of lower limit |
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6. Type in Upper Limit |
Press comma key, then value of upper limit, then ) key |
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7. Evaluate |
Press ENTER |
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NOTE: If you used the integrate function |
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Method 2: Using grapher. |
Follow Step 1 above |
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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 Definite Integral |
Press F5 |
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Press 7 (for 'integral of' f(x)dx) |
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Type in lower limit |
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Press ENTER |
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Type in upper limit |
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Press ENTER |
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Note: You may need to zoom out to see the entire area. If so, you will need to repeat the last step. |