Question about Texas Instruments TI-83 Plus Calculator
When I graph a function and then try to find it's dy/dx, via the [2nd] [calc] menu, my calculator displays the dy/dx value at the bottom of the (graph)screen as it should. But only for a fraction of a second. The value is almost immediately covered up becuase the calculator displays the x and y values of the cursor's coodinates in the place where the dy/dx value was just displayed.
I've noticed that the x,y values at the bottom of the screen are "refreshed" or are "blinking" or something, every time the cursor blinks.
I've tried seeing if turning off the option to display coordinates on the graph would help ( [2nd] [FORMAT] CoordOn --> CoordOff). But the problem remains exactly as described above.
If you have more than one function graphed, use Up/Down to select the one you want. Press Left/Right to select the point at which you want the derivative, then press ENTER to see the value of dy/dx.
Posted on Feb 19, 2010
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