Symbolic Manipulation
239
•
With this kind of equation, EXACT will not compute approximate solutions. For
example,
2
L
x
= x
has an approximate solution
x
≈
0.641186
, but it is not displayed in
the EXACT setting.
APPROXIMATE Setting
APPROXIMATE Setting
APPROXIMATE Setting
APPROXIMATE Setting
When Exact/Approx = APPROXIMATE, the handheld converts rational numbers and
irrational constants to floating-point. However, there are exceptions:
•
Certain built-in functions that expect one of their arguments to be an integer will
convert that number to an integer if possible. For example:
d
(y(x), x, 2.0)
transforms
to
d
(y(x), x, 2).
•
Whole-number floating-point exponents are converted to integers. For example: x
2.0
transforms to x
2
even in the APPROXIMATE setting.
Advantages
Disadvantages
Results are exact.
As you use more complicated rational
numbers and irrational constants, calculations
can:
•
Use more memory, which may exhaust the
memory before a solution is completed.
•
Take more computing time.
•
Produce bulky results that are harder to
comprehend than a floating-point number.
Summary of Contents for Voyage 200
Page 36: ...Getting Started 36 D B D B Press Result ...
Page 45: ...Getting Started 45 3 0 D B D D B D Press Result ...
Page 46: ...Getting Started 46 D 2 0 0 2 D B Scroll down to October and press Press Result ...
Page 60: ...Getting Started 60 B D Press Result ...
Page 139: ...Previews 139 8 Complete the operation Press 2 d Steps and keystrokes Display 5 f 2 ...
Page 453: ...Differential Equation Graphing 453 ...
Page 468: ...Tables 468 ...
Page 777: ...Activities 777 ...
