HP Prime Graphing Wireless Calculator Instrukcja Użytkownika Pobierz pdf (Strona 169)

100

101

Tap and select Root.

The root is displayed at the bottom of the screen.

If you now move the trace cursor close to x = –1 (the other place where the quadratic crosses the x-axis) and

select Root again, the other root is displayed.

Note the button. If you tap this button, vertical and horizontal dotted lines are drawn through the

current position of the tracer to highlight its position. Use this feature to draw attention to the cursor

location. You can also choose a blinking cursor in Plot Setup. Note that the functions in the

Fcn menu all use

the current function being traced as the function of interest and the current tracer x-coordinate as an initial

value. Finally, note that you can tap anywhere in Plot view and the tracer will move to the point on the current

function that has the same x-value as the location you tapped. This is a faster way of choosing a point of

interest than using the trace cursor. (You can move this tracing cursor using the cursor keys if you need ner

precision.)

Analyzing functions 121

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HP Prime Graphing Wireless Calculator Instrukcja Użytkownika Strona 169

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