HP 40gs hp 40gs_user's guide_English_E_HDPMSG40E07A.pdf - Page 228
Constant menu, Diff & Int menu, Hyperb menu, Integer menu
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hp40g+.book Page 46 Friday, December 9, 2005 1:03 AM returns: Y = X -1 + 2 Pressing simplifies this to: Y = X + 1 IM See "IM" on page 13-7. - Specifies the negation of the argument. RE See "RE" on page 13-8. SIGN Determines the quotient of the argument divided by its modulus. Example Typing SIGN(7 + 4i) or SIGN(7,4) yields 7-----+-----4---i . 65 Constant menu e, i, π ∞ See "Constants" on page 13-8. Enters the sign for infinity. Diff & Int menu All the functions on this menu are also available on the menu in the Equation Writer. See "DIFF menu" on page 14-16 for a description of these functions. Hyperb menu All the functions on this menu are described in "Hyperbolic trigonometry" on page 13-9. Integer menu Note that many integer functions also work with Gaussian integers (a + bi where a and b are integers). 14-46 Computer Algebra System (CAS)