<p>Thanks MathProf. I’ve noticed that the derivative or anti-derivative it tells me is sometimes off, and I never knew why. For instance, if the derivative is supposed to be 4, I’ll sometimes get 3.999999998 or 4.000000001. I’ve become familiar enough with the calculator to know what it means, but I wouldn’t recommend using that function if you haven’t learned how to properly find these values or else you might get tripped up by things like that.</p>
<p>I don’t think that it does anything differently for the nDeriv function though, because the graphs always come out looking sort of awkward compared with the real function, and the values are almost always off by a similar margin.</p>