### 10.2.5 Simplifying

The simplify command simplifies expressions. As with all automatic simplifications, do not expect miracles; you will have to use specific rewriting rules if it does not work.

- simplify takes expr, an expression.
- simplify(expr) returns the simplified version of expr.

#### Example

simplify((sin(3*x)+sin(7*x))/sin(5*x))

2 cos | ⎛ ⎝ | 2 x | ⎞ ⎠

##### Remark.

simplify is more efficient in radian mode (which you can turn on, if it is not done already, by checking the radian box in the CAS configuration or inputting angle_radian:=1, see Section 2.5.3).