Combining Expressions |
To combine the terms in an expression using identities for exponents and elementary functions, such as ex or ln(x), select the expression and either:
- or -
If you want to specify additional rules for combining terms, type a comma after "combine." and then type a comma-separated list of the rules in the placeholder.
Then press [Enter].
xm·xn combine → xm+n
To use identities for elementary functions, such as ex or ln(x), type a comma after "combine," followed by a modifier specifying the types of identities to use. The following table lists the available modifiers.
| Modifier | Expression Type | Example |
| atan | Inverse Tangent | |
| exp | Exponential | ex + e2y combine, exp → ex+2y |
| ln | Natural Logarithm | |
| log | Logarithm Base b | |
| sincos | Trigonometric | |
| sinhcosh | Hyperbolic |
You can use the keyword "expand" to undo the results of "combine." For example,
xm·xn combine → xm+n expand → xm·xn