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CAS calculations: Some examples
Suppose you want to find the quotient when x
3
+ 2x
2
+ 3x +4 is divided by –x + 2.
1. P ress K to open the CAS.
2. Press D to display the Toolbox menus.
3. If the CAS menu is not open, tap .
Note that the CAS functions are grouped by category. When you select a category, the
functions in that category appear in a sub-menu. Some items on that sub-menu may open a
further sub-menu. In this example, we are dealing with polynomial division. Thus, at the top
level, the Polynomial category is the one to open to find the appropriate CAS function. But
division is also an algebraic operation. Thus you will find the quotient function on the Algebra
sub-menu (as shown at the right).
4. Select Polynomial > Algebra > Quotient.
The function quo() appears on the entry line.
You can also select a CAS function using the hot-key numbers assigned to each item on the CAS menus. Notice in the
illustration above that Polynomial is item 6 on the top level menu, Algebra is item 8 on the first sub-menu, and Quotient
is item 1 on the next sub-menu. To quickly select Quotient once the CAS menu is open, you could simply press 681 on the
keyboard.
You can also select a CAS function directly from the Catlg menu.
5. Enter the dividend and the divisor, separated by a comma. (Note that the User Guide and
online help give the required syntax for each CAS function. Note too that variables must be
entered in lowercase in the CAS.)
ASsk3>+2ASsj+3ASs+4oQASs+2