Casio Algebra FX 2.0 PLUS User Manual page 175

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The above three screens are produced using the Trace function.
See "5-11 Function Analysis" for more information.
• If you do not specify a variable name (variable A in the above key operation), the calculator
automatically uses one of the default variables listed below. Note that the default variable
used depends on the memory area type where you are storing the graph function.
Memory Area Type
Example Y1 (3) and Y1 (X = 3) are identical values.
• You can also use Dynamic Graph for a look at how changes in coefficients alter the
appearance of a graph. See "5-8 Dynamic Graphing" for more information.
5-3-4
Drawing a Graph
Yn
rn
Xtn
Ytn
fn
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Default Variable
X
θ
T
T
X