This is a video from everystepcalculus.com demonstrating how my programs work on a TI-89 Titanium calculator and other calculators in the TI system for calculus and physics problems ok derivative of log of x and let’s get started to get to my menu you have to press second alpha to put in i n d e x in here the letters and then press alpha to put the eight and the open closed parenthesis. Press enter and you’re into my menu I’ve already scrolled down to log of x natural log of x these are all alphabetical and we’re going to press enter and we’re going to differentiate log of x ahh you have to press alpha before you push put anything into these entry lines of my programs. So you have to remember that and this is a tricky ahh supposedly simple problem that I’ve seen on tests so. Let’s do it. I’m going to press alpha. I’m going to press second to get to the log and then the’ve got second again to put the log in there and then we’re going to put five times x and double parenthesis of course I always show you what I’ve entered what you’ve entered so you can change it if you want. I say it’s ok you’ll notice the formula you prime of u u is always in the parenthesis here in this case log of five x and u prime is one over x and so your answer is one divided by x times log of five time x. Pretty neat, huh? EveryStepCalculus.com, go to my programs buy my programs and enjoy passing calculus.