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To get the graph of the definite integral of a given function f(X) on your TI-83 or TI-84 calculator:
Given a function f(X), in the Y= area of your TI-83 or TI-84 calculator key in the following:
Hit the MATH key followed by the 9 key.
Your display will now appear
Key in the following:
Then graph and slowly (sometimes very slowly) the graph of definite integral of f(x) will appear.
Note: You can use any number in place of 0 when keying in the formula.