TI-84 Plus CE field manual for IB Math
29
All coursesEvaluating a definite integral
Use the calculator's numerical integral command to evaluate ∫abf(x)dx.
Evaluate ∫02e−x2dx.
1
Open the numerical integral command: press , then press for fnInt(.
2
This inserts the integral template. Fill it, moving between boxes with the arrow keys: lower limit , upper limit , integrand , and variable .
3
Press to evaluate.
∫02e−x2dx≈0.882.
Your turn
Work each one on your calculator, then check the answer.
- 1
Evaluate ∫01sin(x2)dx.
- 2
Evaluate ∫02√1+x31dx.
- 3
Evaluate ∫14xsinxdx.