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Power Supply The type of battery you should use depends on the model number of your calculator. fx-3650P The TWO WAY POWER system actually has two power supplies: a solar cell and a G13 Type (LR44) button battery. Normally, calculators equipped with a solar cell alone can operate only when relatively bright light is present. The TWO WAY POWER system, however, lets you continue to use the calculator as long as there is enough light to read the display. • Replacing the Battery Either of the following symptoms indicates battery power is low, and that the battery should be replaced. •Display figures are dim and difficult to read in areas where there is little light available. •Nothing appears on the display when you press the 5 key. E-52 •To replace the battery 1 Remove the six screws that hold the back Screw Screw cover in place and then remove the back cover. 2 Remove the old battery. 3 Wipe off the sides of new battery with a dry, soft cloth. Load it into the unit with the positive k side facing up (so you can see it). 4 Replace the back cover and secure it in place with the six screws. 5 Press 5 to turn power on. Be sure not to skip this step. fx-3950P This calculator is powered by single G13 Type (LR44) button battery. • Replacing the Battery Dim figures on the display of the calculator indicate that battery power is low. Continued use of the calculator when the battery is low can result in improper operation. Replace the battery as soon as possible when display figures become dim. • To replace the battery 1 Press A i to turn off power. 2 Remove the screw that holds the battery cover in place and then remove the battery cover. 3 Remove the old battery. 4 Wipe off the sides of new battery with a dry, soft cloth. Load it into the unit with the positive k side facing up (so you can see it). 5 Replace the battery cover and secure it in place with the screw. 6 Press 5 to turn power on. Screw E-53 Auto Power Off Calculator power automatically turns off if you do not perform any operation for about six minutes. When this happens, press 5 to turn power back on. Specifications Power Supply: fx-3950P: Single G13 Type button battery (LR44) fx-3650P: Solar cell and a single G13 Type button battery (LR44) Battery Life: fx-3950P: Approximately 9,000 hours continuous display of flashing cursor. Approximately 3 years when left with power turned off. fx-3650P: Approximately 3 years (1 hour use per day). Dimensions: 11.8 (H) 80 (W) 159 (D) mm 7/16 (H) 31/8 (W) 61/4 (D) Weight: 100 g (3.5 oz) including battery Power Consumption: 0.0002 W Operating Temperature: 0°C to 40°C (32°F to 104°F) E-54 Practical Examples/Ejemplos practicos Practical Examples/Ejemplos practicos kProgram Library kBiblioteca de programas Problem: Quadratic Equation Create a program that solves the quadratic equation ax2 + bx + c = 0 for x, when values are provided for a, b, and c. Problema: Ecuacion cuadratica Crear un programa que resuelva la ecuacion cuadratica ax2 + bx + c = 0 para x, cuando se proporcionan valores para a, b y c. x = (–b ± b2 – 4ac)/2a (b2 – 4ac > 0) Program Press F F F 1 to display the Edit Prog screen. Input a value from 1 to 4 to select a program number (P1 through P4), and then input the program below. Programa Presione F F F 1 para visualizar la pantalla Edit Prog. Ingrese un valor de 1 a 4 para seleccionar un numero de programa (P1 a P4), y luego ingrese el programa siguiente. Lbl 0: ? > A: ? > B: ? > C: Bx2 – 4AC > D: D = 0 SGoto 1: D > 0 S – – Goto 2: Goto 0: Lbl 2: (– B – v D) . (2A) > X: X ^Lbl 1: (– B + v D) . (2A) > X: X A-1 Program Execution / Ejecucion de programa Display / Presentacion A? B? C? X = 1.5 (Value appears in line 2 of display.) (El valor aparece en la linea 2 de la presentacion.) X = 2 (Value appears in line 2 of display.) (El valor aparece en la linea 2 de la presentacion.) Operation / Operacion > 1 (Example: Program P1) (Ejemplo: Programa P1) 2 < D 7 < 6 < < A-2 Problem: Solution of a Triangle when Two Sides and Their Angle are Known Problema: Solucion de un triangulo cuando se conocen dos lados y su angulo. Create a program that calculates the remaining side and two angles of a triangle when the length of two sides (a, b) and the angle they form (.) are known. Crear un programa que calcule el lado restante y dos angulos de un triangulo, cuando se conocen la longitud de los dos lados (a y b) y el angulo que forman (.). 1 S = bc sin. . 2 ab b222 + c – a cos.= S 2bc . . c 65°41' 23" 41 32 S = 597.8321153 67°58' 1.54" 46°20' 35.46" Program Press F F F 1 to display the Edit Prog screen. Input a value from 1 to 4 to select a program number (P1 through P4), and then input the program below. Programa Presione F F F 1 para visualizar la pantalla Edit Prog. Ingrese un valor de 1 a 4 para seleccionar un numero de programa (P1 a P4), y luego ingrese el programa siguiente. Deg: ? > A: ? > B: ? > D: A . B . sin D . 2^ Ans > X: ( A x2 + B x2 – cos D . 2 . A . B) > C^ sin–1 (X . 2 . B . C) > Y: Y > 90 S Bx2 + Cx2 > A...
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