HP 40gs hp 40gs_user's guide_English_E_HDPMSG40E07A.pdf - Page 157

hp40g+.book Page 3 Friday, December 9, 2005 1:03 AM Functions common to keyboard and menus These functions are common to the keyboard and MATH menu. π For a description, see "p" on page 13-8. ARG For a description, see "ARG" on page 13-7. For a description, see " ∂ " on page 11-7. AND For a description, see "AND" on page 13-19. ! For a description, see "COMB(5,2) returns 10. That is, there are ten different ways that five things can be combined two at a time.!" on page 13-12. ∑ For a description, see "S" on page 13-11. EEX For a description, see "Scientific notation (powers of 10)" on page 1-20. ∫ For a description, see " ∫ " on page 11-7. x-1 The multiplicative inverse function finds the inverse of a square matrix, and the multiplicative inverse of a real or complex number. Also works on a list containing only these object types. Keyboard functions The most frequently used functions are available directly from the keyboard. Many of the keyboard functions also accept complex numbers as arguments. Using mathematical functions 13-3