Symbolic Manipulation 238
Note:
• For an overview of complex numbers, refer to the Technical Reference module.
• To get the complex
i, press 2). Do not simply type the letter i on the keyboard.
Be Aware of the Limitations of Substitutions
• Substitution occurs only where there is an
exact match for the substitution.
Only x
2
was
replaced, not x
4
.
Define the
substitution in
simpler terms for
a more complete
substitution.
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