Solution 34232: Finding Common Denominators on the TI-Nspire™ CAS Family.
How do I find common denominators on the TI-Nspire CAS family?
To find common denominators use the comDenom command on the TI-Nspire CAS. This command returns a reduced ratio of a fully expanded numerator over a fully expanded denominator. The syntax for comDenom is listed below.
comDenom (expression1 [, var])
The example below will demonstrate how to find common denominators of an expression.
ComDenom((y2 + y) /((x + 1)2) + y2 + y)
• Press [home].
• Press [A] or choose to add a Calculator App.
• Press [menu]   .
• Press [ctrl] [fraction template]. This is the key that is activated by pressing [division].
• Press [Y] [x2] [+] [Y].
• Press [tab].
• Press [(] [X] [+]  [)] [x2] [)].
• Press [tab].
• Press [+] [Y] [x2] [+] [Y] [)].
• Press [enter].
Please see the TI-Nspire CAS guidebooks for additional information.
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