HP 113394 User Guide - Page 238

238 Appendix B: Algebraic Mode (ALG) Keystrokes (ALG mode) Display 90.89} 65gr§12} -13.54 96.75 } completes the calculation. New calculation: 65 ×12 z3.5} 27.64 Calculates 96.75 ÷ 3.5 You can also do long calculations without pressing } after each intermediate calculation: just press it at the end. The operators perform from left to right, in the order you enter them. Keying in Negative Numbers ( ) The Þ key changes the sign of a number. z To key in a negative number, type that number and then press Þ. z To change the sign of an already displayed number, press Þ. Keystrokes (ALG mode) Display OO 75Þ §7.1} 0.00 -75. -532.50 Clears any pending operations. Changes the sign of 75 Multiplies -75 by 7.1 Chain Calculations in ALG Mode To do a chain calculation, you don't need to press } after each operation, but only at the very end. 750x12 For instance, to calculate 360 you can enter either: z 750 § 12 } z 360 } or z 750 § 12 z 360 } In the second case, the z key acts like the } key by displaying the result of 750 × 12. Here's a longer chain calculation: 456 − 75 × 68 18.5 1.9 This calculation can be written as: 456 - 75 ÷ 18.5 × 68 ÷ 1.9. Watch what happens in the display as you key it in: File name: hp 12c pt_user's guide_English_HDPMF123E27 Page: 238 of 275 Printed Date: 2005/8/1 Dimension: 14.8 cm x 21 cm