HP Prime Graphing Wireless Calculator Manual do Utilizador descarregar pdf (Página 174)

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Finding the extremum of the quadratic equation

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To calculate the coordinates of the extremum of the quadratic equation, move the tracing cursor near

the extremum of interest (if necessary), tap and select Extremum.

The coordinates of the extremum are displayed at the bottom of the screen.

NOTE: The ROOT, INTERSECTION, and EXTREMUM operations return only one value even if the function in

question has more than one root, intersection, or extremum. The app will only return values that are closest

to the cursor. You will need to move the cursor closer to other roots, intersections, or extrema if you want the

app to calculate values for those.

Adding a tangent to a function

To add a tangent to a function through the trace point:

Use or to move the tracer to the function.

Tap , and then select Tangent. The tangent is drawn as you move the tracer. This option is a

toggle; select it again to remove the tangent.

126 Chapter 7 Function app

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