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Storing Functions

uTo store an x = equationExample: To store x = 3y in line x4

(1)On the Graph Editor window, tap [Type] and then [x=Type] to specify an x = equation.

(2)Tap the box to the right of line number “x4”, and then input the equation:3y.(3)Press Eto store the equation.uTo store an inequalityExample: To store the inequality y > x2 – 2x – 6 in line y5

(1)On the Graph Editor window, tap [Type] and then [y>Type] to specify an inequality expression.

(2)Tap the box to the right of line number “y5”, and then input the expression: x{2-2x-6.

(3)Press Eto store the expression.

uTo store a shade type (ya)Example: To store f(x) = x2 – 1, g(x) = x2+ 1, –1 < x < 1 in line y6

(1)On the Graph Editor window, tap [Type] and then [ShadeType] to specify a shade type expression.

(2)Tap the box to the right of line number “y6”, and then input the expression: k9{X{c-b,-X{c+b}KU- b$X$b

(3)Press Eto store the expression.

Tip

An error message appears if you enter an expression that does not fit the function type. Either input the new function into a different line or delete the current function and then change the type before re-inputting the function.

You can change the equality/inequality sign of an x-type (x =, x>, x<, xt, xs) or y-type

(y =, y>, y<, yt, ys, ShadeType) expression after you input it. Simply tap the current equality/ inequality sign.

On the Type dialog box that appears, select the sign you want and then tap [OK].

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