00calc2


 * Classpad 330 CAS Calculator ** toc

** How to Manipulate Algebra **
Go to the Main Screen
 * Either by clicking on Main in the main menu
 * Or by clicking on Main in the green icon bar

Most of the commands we will use are in the ACTION menu, TRANSFORMATION submenu.

Use the boldface variable names (//**x, y, z**//) from the keypad or from the top row of the virtual keyboard.

Do not use the letters from the qwerty keyboard in the ABC tab.

Expanding Brackets
The __**expand**__ command is in the ACTION menu, TRANSFORMATION submenu.

After __**expand**__, enter your expression. Be careful to match the brackets. Then press the EXE key

Notice the calculator shows 3x as 3•x. Don't write the • in your answer on paper.

[[image:00calc2c.gif width="285" height="158" align="right"]] Factorising
The __**factor**__ command is in the ACTION menu, TRANSFORMATION submenu.

After __**factor**__, enter your expression. Be careful to match the brackets. Then press the EXE key.

Notice the calculator shows the • between the brackets. Again, don't write the •.

Note: The __**factor**__ command will only factorise into rational terms (whole numbers or fractions). If the expression cannot be factorised in this way, the calculator will simply leave the expression in expanded form. (see example on the right)

To factorise into surds, you must use the __**rFactor**__ command.

The __**rFactor**__ command is in the ACTION menu, TRANSFORMATION submenu.

{Make sure you set your calculator into STANDARD mode}

[[image:00calc2e.gif width="287" height="159" align="right"]] Simplifying
The __**simplify**__ command is in the ACTION menu, TRANSFORMATION submenu.

After __**simplify**__, enter your expression. Be careful to match the brackets.

The simplify command doesn't always work the way you expect.

If this happens, try one of the other commands listed here.

Adding Algebraic Fractions
The example shown on the right shows an attempt to add two algebraic fractions.

The __**simplify**__ command gave the result as two separate fractions.

The __**combine**__ command gave the result as a single fraction.

Substituting a Value into an Expression
After the expression type the "|" character and then **x =** the value to be substituted.

The "|" character can be found in the virtual keyboard in the OPTN section of both the MTH tab and the 2D tab.

Taking a Factor out of an Expression
Enter the __**factorOut**__ command then enter your expression then a comma then the value or variable to taken out as a common factor

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