HP 40gs hp 40gs_user's guide_English_E_HDPMSG40E07A.pdf - Page 174

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 variables To perform symbolic calculations, for example symbolic differentiations and integrations, you need to use formal 13-20 Using mathematical functions