Difference between revisions of "TrigExpand Command"
From GeoGebra Manual
m |
m (changed CAS Syntax description) |
||
Line 9: | Line 9: | ||
==CAS Syntax== | ==CAS Syntax== | ||
− | + | The following commands are only available in the [[File:Menu view cas.svg|link=|16px]] [[CAS View]]: | |
− | : | ||
− | |||
− | |||
− | |||
− | |||
− | : | ||
;TrigExpand[ <Expression>, <Target Function>, <Target Variable> ] | ;TrigExpand[ <Expression>, <Target Function>, <Target Variable> ] |
Revision as of 16:29, 9 October 2015
- TrigExpand[ <Expression> ]
- Transforms a trigonometric expression into an expression using only simple variables as arguments.
- Example:
TrigExpand[tan(x + y)]
gives \frac{cos(x) sin(y) + cos(y) sin(x)}{cos(x) cos(y) - sin(x) sin(y)}.
- TrigExpand[ <Expression>, <Target Function> ]
- Transforms a trigonometric expression into an expression using only simple variables as arguments, preferring the given target function.
- Example:
TrigExpand[tan(x + y), tan(x)]
gives \frac{-tan(x) - tan(y)}{tan(x) tan(y) - 1}.
CAS Syntax
The following commands are only available in the CAS View:
- TrigExpand[ <Expression>, <Target Function>, <Target Variable> ]
- Transforms a trigonometric expression into an expression using only simple variables as arguments, preferring the given target function and target variable.
- Example:
TrigExpand[sin(x), sin(x), x/2]
gives 2cos \left( \frac{x}{2} \right) sin \left( \frac{x}{2} \right) .
- Example:
TrigExpand[sin(x)/(1+cos(x)), tan(x), x/2]
gives tan \left( \frac{x}{2} \right).
- TrigExpand[ <Expression>, <Target Function>, <Target Variable>, <Target Variable> ]
- Transforms a trigonometric expression into an expression using only simple variables as arguments, preferring the given target function and target variables.
- Example:
TrigExpand[csc(x) - cot(x) + csc(y) - cot(y), tan(x), x/2, y/2]
gives tan \left( \frac{x}{2} \right) +tan \left( \frac{y}{2} \right) .
Note: See also TrigSimplify Command and TrigCombine Command.