hp40g+.book Page 14 Friday, December 9, 2005 1:03 AM

 

Example 2

 

Typing:

 

SUBST(QUOTE(CONJ(Z)),Z=1+i)

 

gives:

 

CONJ(1+i)

STORE

Store an object in a variable

 

STORE stores an object in a variable.

 

STORE is found in the ALGB menu or the Equation Writer

 

menu bar.

 

Example

 

Type:

 

STORE(X2-4,ABC)

 

or type:

 

X2-4

 

then select it and call STORE, then type ABC, then press

 

ENTER to confirm the definition of the variable ABC.

 

To clear the variable, press VARS in the Equation Writer

 

(then choose PURGE on the menu bar), or select

 

UNASSIGN on the ALGB menu by typing, for example,

 

UNASSIGN(ABC)

Substitute a value for a variable

 

is an infix operator used to substitute a value for a

 

variable in an expression (similar to the function SUBST).

 

has two parameters: an expression dependent on a

 

parameter, and an equality (parameter=substitute value).

 

substitutes the specified value for the variable in the

 

expression.

 

Typing:

 

X2 – 1

 

X = 2

 

 

 

 

 

gives:

 

22 – 1

14-14

 

 

Computer Algebra System (CAS)