Numerical Integration

Press to view the calculus menu, then to select numerical integration.

The syntax is: fnInt( expression,variable ,startValue,endValue ).

The numerical integration option approximates the definite integral of expression with respect to variable from startValue to endValue.

Note: The value of tolerance, tol is used to determine how accurate to calculate the integral. The TI tries to keep the absolute error under tol. A smaller value yields a more accurate integral but takes longer to compute. It can be changed in the tolerance editor available by pressing , typically about 0.001.

For more specific information and tips see Integration on the TI-how does it work?.