The results of this operation are shown at right. You may either type each value and press, or use the blue arrow keys to move the cursor to each location and then press. You will be prompted to enter a lower limit and an upper limit. In the example at right, the definite integral of y = x 2 between x = 0 and x = 4 is 64/3.Р”Р„lternatively, if you have a graph of the function, you can approximate the definite integral using '7: int f(x) dx' in the Math menu. This method may have an advantage in some circumstances in that it tries to return an exact result whenever possible. You can calculate the definite integral of a function over some interval using '2: integrate' from the menu.Р”В®valuating a definite integral adds two parameters to theР”Р‡unction - the syntax is 'expression, variable, lowerР”В®ndpoint, upper endpoint'. Remember that decimal approximations must be reported to 3 decimal places (at least). Note: On the AP Calculus test, evaluating a definite integral is one of the four operations that can be done on your calculator without any mathematical justification. position, it represents the work done on the object by the force, and on and on. time graph, this area represents the change in the object's velocity during that time interval. time graph, this area represents the object's displacement during the given time interval. The definite integral of a function represents (among other things) the area between the graph of the function and the horizontal axis over some interval. Evaluating Definite Integrals Evaluating Definite Integrals on the TI-89

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