ti 89 question, please help!

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<p>so i'm having a problem with the differentiation function and integrating function on my ti 89. online, it says that to differentiate on the ti 89, i must type "d(function, variable, order)." however, whenever i use this command, i get a numerical value as opposed to a new function. i have the same problem when trying to calculate an indefinite integral with the integration function - i get a number instead of a function. thanks in advance for any help!</p>

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<p><a href="http://pages.infinit.net/carl/TI89tutoen.html#derivation%5B/url%5D"&gt;http://pages.infinit.net/carl/TI89tutoen.html#derivation&lt;/a&gt;&lt;/p>

<p>does that help you?</p>

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<p>You probably have values stored for your variables... you just need to clear them. I forget which one, but it's like F7 or something-- one of the menus is called "Cleanup", and then go to Clear Variables, a-z.</p>

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<p>You probably have values stored for your variables... you just need to clear them. I forget which one, but it's like F7 or something-- one of the menus is called "Cleanup", and then go to Clear Variables, a-z.</p>

<hr>

<p>Yup, thats probably what it is. Just go to like F3 or something and scroll to the right until you see "Cleanup", and then you go to Clear Variables, a-z.
Hope that works. :)</p>

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<p>clearing the variables worked. thanks for the help!</p>

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<p>yeah, since you are gonna be doing that often, save any constant like in physics or chem as "two variable names". For example, make epsilon nought eo as opposed to e b/c e would get cleared.</p>