Okay so I've been calculating using the simple e^x derivations. I found that on my Texas TI-89 Titanium I can use the nDeriv( command to EXTREMLY easy and fast calculate pretty much any derivation as long as I have something to go at.

So how would you guys/girls calculate this;

I`(7) if

I(x) = 15'000*e^(0.24x)

Is is possible to do this without "cheating" using my calc?