The calculator called TI-84 is a common tool in Math, Chemistry, Economics and Physics classes in high school, as well as beyond. Using the CALC menu is convenient at all. The CALC menu is used to find specific values contained in a graph. There are several values that can be found in charts. You can find a Y value at an X value (CALC value), calculate a zero point (CALC zero), calculate a peak or valley (CALC minimum or CALC maximum) and finally an intersection of two graphs can be calculated (CALC intersect).
Enter function
With the CALC menu you can calculate certain values that are in a graph. So first it is necessary to get a graph. To do this, press the button ?? Y = ??. At Y1 you enter the desired function for which you want to see the graph.
CALC value
With CALC VALUE you can find the matching Y value for any desired X value. To do this, press ?? 2ND ??, ?? CALC ?? and then on ?? value ??. Then you get the graph, with ?? X = ?? below it. Enter the X value you want to know, then the corresponding Y value will appear next to it.
CALC zero
CALC zero, the name says it all, is to calculate the zero point on the X axis. To do this, press ?? 2ND ??, ?? CALC ?? and then on ?? zero ??. You will again see a screen with the graph in it. At the bottom it says “Left bound”, move with the arrows in the curve a bit to the left of the zero point and click enter. Then: ?? Right bound ?? appears. Move with the arrows again, now to the right of the zero point. Then press enter again and the zero point will appear at the bottom of the screen, with the X and Y values indicated.
CALC minimum / maximum
This function is there to calculate the top or the bottom of a graph. To do this, press ?? 2ND ??, ?? CALC ?? and then on ?? minimum ?? or ?? maximum ??. (Minimum is used at a valley in the graph, maximum at a top). Again appears: ?? Left Bound ??? and ?? Right Bound ??. You use this the same as with CALC zero: so with ?? Left Bound ??? move with the arrows to the left, at ?? Right Bound ??? move to the right. Pressing enter and the X and Y values of the peak or valley reappear.
CALC intersect
For the function CALC intersect you need not one but two functions. You then enter at ?? Y2 = ?? the second graph you need. When the two graphs have an intersection, you can use CALC intersect. Make sure you have the intersection point in view when you press GRAPH. Press ?? 2ND ??, ?? CALC ?? again and then on intersect. You get the picture “First Curve”. Press enter when you are on a graph whose intersection you want to calculate, at ?? Second Curve ??? then press the other graph with which the first intersects. At the bottom of the screen, ?? Intersection ?? appears. with the X and Y values of the intersection point below.