Combining Expressions
Use the keyword combine to combine the terms in an expression using identities for exponents and elementary functions.
To specify identities for elementary functions, such as ex or ln(x), you can use optional modifiers. For example, to combine terms involving logarithms, use the modifier ln. The available modifiers are listed in the following table:
Modifier
Type of Identity
atan
Inverse tangent
exp
Exponential
ln
Natural logarithm
log
Decimal logarithm
sincos
Sine or cosine
sinhcosh
Hyperbolic sine or hyperbolic cosine
You can use the keyword expand to undo the results of combine.
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