Using the Calculator to evaluate integrals using an updated TI84 plus

• To evaluate a definite integral in your calculator you can hit the ALPHA button followed by Window and choose choice 5• If you have an older calculator see

where you can find this feature on the next slide

Using the Calculator to evaluate integrals using an non-updated TI84 plus or a TI83

• If you have an older calculator you can access the Definite Integral under the MATH button. It should be the choice that says fnInt(

To Evaluate • With an updated calculator you simply

need to type in the integral as you see it on your paper.• Note – all variables must be the same,

it is easiest to always use x but you can use any letter of the alphabet• Once you have typed it in simply press

enter to evaluate the integral

To Evaluate • To evaluate the finite integral in an older

or non-updated calculator you will need to remember the order to put your parts.• After fnInt you first put the function, you

may use any variable, then the variable, then the lower limit then the upper limit.• All of these items are followed by a

comma, the comma is above the 7• Once you have typed it in simply press

enter to evaluate the integral