Saturday, January 17, 2009

iPhone Tricks - My iPhone Can Differentiate

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Here's a great iPhone app that I stumbled upon called DSolver. DSolver is an application that allows you to enter an equation and then perform differentiation on the expression - either 1st or 2nd derivative. Not as full-featured as desktop software, such as Maple, Macsyma, or Mathemtica but pretty impressive nonetheless. Now I just need an integration app!
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Here's the equation entry screen, allowing you to input virtually any equation. Here's an equation I entered in the editor - just a random equation here, nothing significant or earth-shattering.
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Clicking done takes you to this screen. You can pick partial or mixed derivative, derivative variable, 1st or 2nd derivative, and whether or not to display the solution details.
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Here's the result, showing the original equation and the resulting derivative - 1st in this case.
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Here are the details of the solution.
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For extra credit, here's the 2nd derivative:
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