Symbolic Manipulation
272
-
Clear the history area (
,
8
) or delete unneeded history pairs.
-
You can also use
,
9
to reduce the number of history pairs that will be saved.
•
Use
3
to set Exact/Approx = APPROXIMATE. (For results that have a large
number of digits, this uses less memory than
AUTO
or EXACT. For results that have
only a few digits, this uses more memory.)
Simplifying Problems
Simplifying Problems
Simplifying Problems
Simplifying Problems
•
Split the problem into parts.
-
Split
solve(
a
†
b=0,
var
)
into
solve(
a=0,
var
)
and
solve(
b=0,var
)
. Solve each part and
combine the results.
•
If several undefined variables occur only in a certain combination, replace that
combination with a single variable.
-
If m and c occur only as
m
†
c
2
, substitute e for
m
†
c
2
.
-
In the expression
, substitute c for
(a+b)
and use
. In
the solution, replace c with
(a+b)
.
•
For expressions combined over a common denominator, replace sums in
denominators with unique new undefined variables.
-
In the expression
, substitute d for
and
are
. In the solution, replace d with
.
•
Substitute known numeric values for undefined variables at an earlier stage,
particularly if they are simple integers or fractions.
a b
+
(
)
2
a b
+
(
)
2
+
1
a b
+
(
)
2
–
--------------------------------------------------
c
2
c
2
+
1
c
2
–
---------------------
x
a
2
b
2
+
c
+
------------------------------
y
a
2
b
2
+
c
+
------------------------------
+
a
2
b
2
+
c
+
x
d
---
y
d
---
+
a
2
b
2
+
c
+
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 ...
