TI-86 Reference

 

To Make Display Darker:         y}  (repeat as needed)

To Make Display Lighter:         y†  (repeat as needed)

(battery stength is indicated by the number in the upper right corner.  9 is the weakest)

 

To enter an exponent like 5³                              5›3

To enter a negative number like -3                    Ì3                  (gray negative key)

To subtract two values like 5 – 3                       5 ¹ 3              (blue subtraction key)

To calculate an absolute value like |-3|   2^nd �; F1[NUM]; F5 abs (-3)

To redisplay the previous calculation:                 yÍ  [ENTRY]

To retrieve the answer to the previous problem:yÌ [[ANS]

 

To Graph:                                           s

 F1 o

                                        ‘ to erase any previous equations

                                    8 ¥ (Ì [x-VAR] ¹ 4)

                                    [EXIT]

                                                              F5 s

                                                  

 

To Change Graph Window:                   

 

Pre-set values:                  

F3 q F4 ZSTD [-10, 10] by [-10, 10]

F3 q [MORE] F4 ZDECM:

 [-6.3,6.3] by [-3.1, 3.1]

 

Any values you wish to enter:  F2 [WIND]

[Xmin, Xmax] by [Ymin, Ymax]

 

To Find Values on the Graph:          

F4 r

       (cursor is displayed with coordinates at the bottom)

     Use arrows to move cursor left or right on the graph

 

     Enter a number to move to a specific point

                                   

  

 

 

To Generate a Table of Values:                    Enter equation

                                                                        Set up table by using TABLE key

F2 [TBLSET]

                        DTbl  is the change in the x values

      View table by using F1 [TABLE]

 

 

To Find Special Points on a Graph:

                                                           

                                   

x-intercepts:      [GRAPH]; [MORE]

F1 [MATH]

F1 [ROOT]     

                        move left of intercept, Í

move right of intercept, Í

move back close to intercept, Í

 

 

minimum:          [GRAPH]; [MORE]

F1 [MATH];

F4 [FMIN]     

                        move left of minimum, Í

move right of minimum, Í

move back close to minimum, Í

 

maximum:         same as minimum, only use F5 [FMAX]

 

                       

intersection:      enter equations for Y1 and Y2

                        [GRAPH]; [MORE]

F1 [MATH]; [MORE]

F3 [ISECT]                 

                        move close to intersection point                         Í

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