Texas Instruments TI-84 PLUS SILV Guidebook - Page 94
Using the CALC (Calculate) Operations, CALCULATE Menu, value
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Using the CALC (Calculate) Operations CALCULATE Menu To display the CALCULATE menu, press y /. Use the items on this menu to analyze the current graph functions. CALCULATE 1: value 2: zero 3: minimum 4: maximum 5: intersect 6: dy/dx 7: ‰f(x)dx Calculates a function Y value for a given X. Finds a zero (x-intercept) of a function. Finds a minimum of a function. Finds a maximum of a function. Finds an intersection of two functions. Finds a numeric derivative of a function. Finds a numeric integral of a function. value value evaluates one or more currently selected functions for a specified value of X. Note: When a value is displayed for X, press ' to clear the value. When no value is displayed, press ' to cancel the value operation. To evaluate a selected function at X, follow these steps. 1. Select 1:value from the CALCULATE menu. The graph is displayed with X= in the bottom-left corner. 2. Enter a real value, which can be an expression, for X between Xmin and Xmax. 3. Press Í. The cursor is on the first selected function in the Y= editor at the X value you entered, and the coordinates are displayed, even if CoordOff format is selected. To move the cursor from function to function at the entered X value, press } or †. To restore the free-moving cursor, press | or ~. Chapter 3: Function Graphing 87