This is a video solving a u substitution problem step by step and also demonstrating how my downloadable programs work in your TI-89 Titanium calculator and other TI calculators, for calculus and physics problems. Let’s get started you have to press second alpha to put the i n d e x letters in there and then you have to press alpha to put the eight and the open and closed parenthesis press enter you’re into my menu here’s the menu I happen to be at the bottom right now but it’s all alphabetical we’re doing u substitution click on that you have to press alpha before you put anything into my entry lines here so were going to add the function. I go two times the quantity two times x plus one to the fourth power I always show you what you’ve entered. So you can change it if you want I say it’s ok and because we have a constant here we need to put it outside the integral so we put it outside and then we find u u is two x plus one which is inside the parenthesis derivative is two then you always take the two if there is a constant in this part take it and move it over here du divided by two dx equals dx and then you have u four equals two x minus one to the four or two x plus one to the power four and then we do our integral here here’s the two on the outside and the integral u four du over two divided by two and we have to multiply that times this, etc. Here’s your answer. Pretty neat huh? everystepcalculus.com. Go to my site buy my programs and pass calculus.