HP Prime Graphing Wireless Calculator Instrukcja Użytkownika Strona 171

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3. Select the function that has the point of intersection with the currently selected function you wish to
nd.
The coordinates of the intersection are displayed at the bottom of the screen.
Tap on the screen near the intersection, and repeat from step 2. The coordinates of the
intersection nearest to where you tapped are displayed at the bottom of the screen.
Finding the slope of a quadratic equation
To nd the slope of the quadratic function at the intersection point:
1.
Tap to display the menu, tap , and then select Slope.
The slope (that is, the gradient) of the function at the intersection point is displayed at the bottom of the
screen.
You can press or to trace along the curve and see the slope at other points. You can also
press or to jump to another function and see the slope at points on it.
2.
Press to display the Plot menu.
Analyzing functions 123
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