5-3-1

Drawing a Graph

5-3 Drawing a Graph

You can store up to 20 functions in memory. Functions in memory can be edited, recalled, and graphed.

kSpecifying the Graph Type

Before you can store a graph function in memory, you must first specify its graph type.

1.While the Graph relation list is on the display, press 3(TYPE) to display the graph type menu, which contains the following items.

•{Y=}/{r=}/{Parm}/{X=c} ... {rectangular coordinate}/{polar coordinate}/{parametric}/ {X=constant}*1 graph

•{Y>}/{Y<}/{Yt}/{Ys} ... {Y>f(x)}/{Y<f(x)}/{Y>f(x)}/{Y<f(x)} inequality graph

•{CONV}

•{'Y=}/{'Y>}/{'Y<}/{'Yt}/{'Ys}

... {changes the function type of the selected expression}

2. Press the function key that corresponds to the graph type you want to specify.

kStoring Graph Functions

u To store a rectangular coordinate function (Y=) *2

Example To store the following expression in memory area Y1 : y = 2x2 – 5

3(TYPE)1(Y=) (Specifies rectangular coordinate expression.)

cvx-f(Inputs expression.)

w (Stores expression.)

*1 Attempting to draw a graph for an expression in which X is input for an X = constant expression results in an error.

*2 A function cannot be stored into a memory area that already contains a function of a different type from the one you are trying to store. Select a memory area that contains a function that is the same type as the one you are storing, or delete the function in the memory area to which you are trying to store.

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