CALCULUS
TI-85 CALCULATOR                                                         Instructor: Ms. Donna Stein
Graphing keys:           Located on the top row directly below the screen. Go to 1'st column, 3'rd row down
GRAPH
y = (F1)                    (enter function)
Exit
Graph  (F5)                You should now see your graph on a standard size window
To locate your minimum value:
MORE                       (3'rd key top row of keypad)
MATH  (F1)              (located directly under the screen).
                                 To find the minimum value you need define an interval that contains it.
                                  On the bottom of your calculator screen you will hit the following keys:
LOWER (F1)             Using the arrow keys move the cursor to the left of the lowest value.
 ENTER.
UPPER (F2)              Using the arrow keys move the cursor to the right of the lowest value.
ENTER.

MORE                        (3'rd key top row of keypad)
FMIN  (F1)               (located directly under the screen).
ENTER                      The Minimum values x = # and y = # will be located on the bottom of the screen.


To locate your maximum value:
MORE                        (3'rd key top row of keypad)
MATH  (F1)              (located directly under the screen).
                                   To find the maximum value you need define an interval that contains it.
                                  On the bottom of your calculator screen you will hit the following keys:
LOWER (F1)             Using the arrow keys move the cursor to the left of the highest value.
 ENTER.
UPPER (F2)              Using the arrow keys move the cursor to the right of the highest value.
ENTER.

MORE                        (3'rd key top row of keypad)
FMAX  (F2)              (located directly under the screen).
ENTER                      The Maximum values x = # and y = # will be located on the bottom of the screen. 

To locate the roots, zeros, or solutions of your function.
 NOTE: YOU WILL NEED TO REPEAT THIS PROCESS FOR EACH ROOT

MORE                         (3'rd key top row of keypad)
MATH  (F1)               (located directly under the screen).
ROOT (F3)                 Use the arrows to move the cursor to the desired root on the x axis.
ENTER                      The root x = # and y = 0 will be located on the bottom of the screen.
                                   Continue this process for any other roots.

Computing the finite Integral    (Begin by graphing your function)

More
MATH                         once again you will see the list above.
F5                                Sf(x)   (push the button F5)
                                    On the bottom of your calculator screen you will see
"x =            y =    "       Using the arrow keys move the cursor to the lower limit of x = #
                                    (You can Zoom in to get a more precise value.)
Hit enter.
                                    Now on the bottom of your screen you will see
"x =            y =    "       Using the arrow keys move the cursor to the upper limit of x = #
                                    (You can Zoom in to get a more precise value.)
Hit enter.
                                    The display at the base of the screen gives the value of the integral.

Linear Regression Analysis    (Enter a set of data- and approximate the linear equation)

                                 Enter the Data:
STAT                           You will see a menu on the bottom of the screen.
EDIT (F2)                  Xlist name and ylist name will appear on the screen.
ENTER
ENTER
CLRxy (F5)                This will clear all previous values
X1 = #                        Enter the first value of the first list
ENTER
Y1 = #                        Enter the first value of the second list
ENTER
X2 = #                        Enter second value of first list
ENTER
Y2 = #                        Enter the second value of the second list
ENTER                       Continue this process until both lists are entered.
 2'nd
Quit
                                  Find the equation of the line.
STAT
CALC (F1)
ENTER
ENTER
LINR (F2)                   You will now see:    LinR      ( These are the values for   y = a + b x )
                                                                   a =  #
                                                                   b =  #
                                                                 corr =  #
                                                                   n =   #