HP 39gII, Руководство пользователя

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Apps and their views 23
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Apps and their views
HP Apps
HP Apps are applications designed for the study and
exploration of a branch of mathematics or to solve
problems of one or more types. The following table lists
the name of each HP App and gives a general description
of its purpose.
App name Use this app to explore:
Function Real-valued, rectangular functions y
in terms of x . Example:
.
Solve Equations in one or more real-valued
variables. Example:
.
Statistics
1Var
One-variable statistical data ( x )
Statistics
2Var
Two-variable statistical data ( x and y )
Inference Confidence intervals and Hypothesis
tests based on the Normal and
Students-t distributions.
Parametric Parametric relations x and y in terms
of t . Example:
x = cos ( t )
and
y =
sin( t )
.
Polar Polar functions r in terms of an angle
θ
.
Example: .
y 2 x
2
3 x 5 + + =
x 1
+
x
2
x
–
2
– =
r 2 4
θ ( )
cos =