Hello, Tom from everystepcalculus.com and everystepphysics.com. I’m going to do a definite integral here. It was on Yahoo so I thought I might do it. Everybody got it wrong. Didn’t even really do the integral of it right so I’m going I show you how it’s done here. Index 8 to get to my menu. Then we’re going to school down here to definite integral. And the x is given. xy is given so it’s really double integral. Still is different though. It comes up with a certain area under the curve. So we’re going to enter the function. Alpha X to the 1 dived by 3 1/3 third plus 2 times x minus one.

I always show you what you’ve entered, you can change it if you want. I say its ok. We’re gonna enter the range. Alpha 1 to alpha 8. You have to press alpha before you enter anything in my entry lines my programs and we’re gonna say that’s ok. We’re going to do the integral which is this right here and then we do the calculations it x equals 8, 8 is substitute in all these in the integral equals 68. 1 is substituted for all the X’s. three-quarters, common denominator is 269 over 4 square units or 67.3 square units. Pretty neat, huh? everystepcalculus.com, go to my site, buy programs if you want to pass calculus.

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