HP (Hewlett-Packard) NW280-1001 ユーザーズマニュアル

 48 

48

Note that in this case, there is a second solution. You can tell that 

by the presence of a new menu item: 

. Tap 

 to see 

the second solution: c = 3.825… Press 

 again to see the 

earlier result.

Explorer apps are designed for you to explore linear, quadratic, and trigonometric functions. Various functions and their 

associated graphs are shown. You can change the parameters of a function and immediately see how the graph of that function 

changes. You can also change a graph and immediately see the change in the parameters of the corresponding equation. You 

can then test your skill at matching functions with graphs.

The Linear Explorer app gives you an opportunity to explore the behavior of graphs of the form y = ax and y = ax + b as the 

values of a and b change. The Quadratic Explorer app is very similar. With it you can explore the behavior of y = a(x + h)

2

 + v 

as the values of a, h, and v change. In both apps you can change the equation and note the change in the graph, or change the 

graph and note the change in the equation. You can change a graph using change keys (described on page 49). You can also 

translate a graph by tapping on it and then dragging it.
To open the Linear Explorer app (or Quadratic Explorer app), press 

I

 and select 

 (or 

). 

Since these apps are very similar, both will be treated together in this section (with the Quadratic Explorer app used as the 

model).

Solution 1

Solution 2