HP 40gs hp 40gs_user's guide_English_E_HDPMSG40E07A.pdf - Page 227

hp40g+.book Page 45 Friday, December 9, 2005 1:03 AM CAS Functions on the MATH menu When you are in the Equation Writer and press , a menu of additional CAS functions available to you is displayed. Many of the functions in this menu match the functions available from the soft-key menus in the Equation Writer; but there are other functions that are only available from this menu. This section describes CAS functions that are available when you press in the Equation Writer (grouped by main menu name). Algebra menu All the functions on this menu are also available on the menu in the Equation Writer. See "ALGB menu" on page 14-10 for a description of these functions. Complex menu i Inserts i (= -1 ). ABS Determines the absolute value of the argument. Example Typing ABS(7 + 4i) yields 65 , as does ABS(7 - 4i). ARG See "ARG" on page 13-7. CONJ See "CONJ" on page 13-7. DROITE DROITE returns the equation of the line through the Cartesian points, z1, z2. It takes two complex numbers, z1 and z2, as arguments. Example Typing: DROITE((1, 2), (0, 1)) or: DROITE(1 + 2·i, i) Computer Algebra System (CAS) 14-45