Limit Operator
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Operator
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Description
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Keyboard Shortcut
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Evaluates the limit of a symbolic expression.
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Ctrl+L
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The limit operator contains four placeholders:
1. Left-side of arrow—Limiting variable
2. Right-side of arrow—Limiting value
3. Limit Side
◦ Right-hand (+)
◦ Left-hand (-)
◦ Two-sided (empty)
4. Expression—Expression for which you want to compute the limit.
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When using the limit operator and specifying the limit value:
• PTC Mathcad treats unsigned infinity the same way it treats positive infinity for functions of real variables.
• The limit value placeholder allows the insertion of ∞ and -∞, but not +∞. This reinforces the statement that PTC Mathcad treats +∞ and ∞ as equals.
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Examples
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Additional Information
• You cannot evaluate limits using the numerical equal sign =.
• If the limit does not exist, PTC Mathcad returns an error message.