HP Prime Graphing NW280AAABA manual Quadratic Explorer app, Open the app

Quadratic Explorer app

The Quadratic Explorer app can be used to investigate the behavior of y = a(x + h)2 + v as the values of a, h and v change.

Open the app	PressIand select
	Quadratic
	Explorer.
	The left half of the display
	shows the graph of a
	quadratic function. The
	right half shows the
	general form of the equation being explored at the top
	and, below it, the current equation of that form. The keys
	you can use to manipulate the graph or equation appear
	below the equation. (These will change depending on the
	level of equation you choose.) Displayed beneath they
	keys is the equation, the discriminant (that is, b2 – 4ac ),
	and the roots of the quadratic.
Graph mode	The app opens in graph
	mode. In graph mode,
	you manipulate a copy of
	the graph using whatever
	keys are available. The
	original
	graph—converted to
	dotted lines—remains in
	place for you to easily see the result of your
	manipulations.
	Four general forms of quadratic equations are available
	for you to explore:
	y = ax2 [Level 1]
	y = (x + h)2 [Level 2]
	y = x2 + v [Level 3]
	y = a(x + h)2 + v [Level 4]

302 The Explorer apps