You can find the int() function in the [CATALOG]. Of course you can always type a function name, too. |
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Here are some results of the [x] (int()) function. |
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By default, the TI-89 will connect the segments of a graph. Since we know that the graph of y = [x] is discontinuous, press [F6-Style] and select "2: Dot". |
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Here is the resulting graph (in the "2: ZoomStd" window). |
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You won't find "int(" in the [2nd][MATH] menu, but the "6 floor(" function in the "1: Number" submenu is the same thing. |
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Here are some results of the floor() function - compare to the int() function results above. |