hp40g+.book Page 20 Friday, December 9, 2005 1:03 AM

XOR

Exclusive OR. Returns 1 if either value1 or value2—but

 

not both of them—is non-zero, otherwise returns 0.

 

value1 XOR value2

Trigonometry functions

 

The trigonometry functions can also take complex

 

numbers as arguments. For SIN, COS, TAN, ASIN,

 

ACOS, and ATAN, see the Keyboard category.

ACOT

Arc cotangent.

 

ACOT(value)

ACSC

Arc cosecant.

 

ACSC(value)

ASEC

Arc secant.

 

ASEC(value)

COT

Cotangent: cosx/sinx.

 

COT(value)

CSC

Cosecant: 1/sinx

 

CSC(value)

SEC

Secant: 1/cosx.

 

SEC(value)

Symbolic calculations

Although CAS provides the richest environment for performing symbolic calculations, you can perform some symbolic calculations in HOME and with the Function aplet. CAS functions that you can perform in HOME (such as DERVX and INTVX) are discussed in “Using CAS functions in HOME” on page 14-7.

In HOME

When you perform calculations that contain normal

 

variables, the calculator substitutes values for any

 

variables. For example, if you enter A+B on the command

 

line and press

, the calculator retrieves the values

 

for A and B from memory and substitutes them in the

 

calculation.

 

Using formal

To perform symbolic calculations, for example symbolic

variables

differentiations and integrations, you need to use formal

13-20

 

 

Using mathematical functions