Press (-Other) and select "1: Define". |
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Now type your function. Don't forget to press to get alphabetic characters. I've entered the function f(x) = x2 - 4 on the screen at right. |
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As you can see at right, the calculator can evaluate the function at any (legal) value, such as f(5), f(a), f(2t - 1) using the normal mathematical notation. |
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It is also straightforward to graph y = f(x), as shown at right. Just press , and type "f(x)" . |
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Here is the graph of y = f(x), made by pressing (-Zoom) and selecting "6: ZoomStd" |
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You can also define a function by entering it in the "Y=" () screen. |
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You can evaluate functions defined on the "y=" screen in exactly the same way as a function defined on the screen. |
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