Sharp EL-9900 Graphing Calculator Basic Keyboard Activities General Mathematics Algebra Programming Advanced Keyboard Activities Algebra Calculus Statistics Trigonometry Programming Sharp EL-9900 Graphing Calculator Basic Keypad EL-9900 SUB SPLIT TBLSET D R AW F O R M AT CALC Y= OPTION GRAPH LIST TABLE CLIP WINDOW ZOOM TRACE +­ . . ­ ON + STAT PLOT SLIDE SHOW A-LOCK OFF 2ndF ALPHA INS SET UP QUIT MATH A STAT B PRGM C DEL D BS % CL Simp G ab c bc a I A.xxx . int . E x ­1 F 2 x } H ab c L ab M ab N , J RCL K VARS STO { x P O 7 Q 8 R 9 S ( ) T CATALOG U 4 V 5 W 6 X x Y . . ­ Z 1 0 2 SPACE 3 (­) + ENTRY ­ ANS xp ENTER BASIC ARITHMETIC Press +­ ×÷ to access the calculation screen. 1. Add 9 to 27 twice. STEP 1: STEP 2: STEP 3: STEP 4: STEP 5: Enter 27 by pressing 2 7. Add by pressing the + key. Enter 9 by pressing 9 . Find the first sum by pressing the ENTER key. Add 9 again by pressing + 9 ENTER . 2. Multiply STEP 1: STEP 2: STEP 3: STEP 4: STEP 5: STEP 6: 3 4 to 5 2 . Then, convert to a decimal. a/b 4 Enter 3 by pressing 3 4 2 . . Multiply by pressing the × key. Enter 5 by pressing 5 a/b 2 Find the product by pressing ENTER . Convert to an improper fraction by pressing b/c ENTER . Convert to a mixed number by pressing ab/c ENTER . 1 Basic Keyboard/GENERAL MATHEMATICS USING THE SHARP EL-9900 Copyright © 2002, Sharp Electronics Corporation. Permission is granted to photocopy for educational use only. PARENTHESES AND EDITING Press +­ ×÷ to access the calculation screen. A trapezoid is a four-sided figure where two of the sides are parallel and the other two sides are not parallel. b1 h b2 The area of a trapezoid is defined to be Area = ( h )·(b1 + b2) where h 2 is the height or distance between the parallel sides b1 and b2. 1. Calculate ( 5 ) × (3 + 4). 2 STEP 1: STEP 2: STEP 3: STEP 4: Enter ( 5 ) by pressing ( 2 5 a/b 4 2 ). Multiply by pressing the × key. Enter (3 + 4) by pressing ( 3 + ). Calculate by pressing the ENTER key. The answer is 17.5 2. Edit the previous calculation to find ( 5 )·(7 + 4). 2 STEP 1: STEP 2: STEP 3: STEP 4: Edit the previous calculation by pressing 2ndF ENTRY 2 Basic Keyboard/GENERAL MATHEMATICS USING THE SHARP EL-9900 Copyright © 2002, Sharp Electronics Corporation. Permission is granted to photocopy for educational use only. Delete the 3 by pressing Insert the 7 by pressing 7 . Calculate by pressing the ENTER key. The answer is 27.5. to move the blinking cursor to highlight the 3. DEL to backspace delete. PERCENTS Press +­ ×÷ to access the calculation screen. Mixtures contain two or more components. Percents are often used to express the amount of a component in a mixture. 1. Find 30% of 400. STEP 1: STEP 2: STEP 3: Enter 400 by pressing 4 Enter 30% by pressing 3 The answer is 120. 0 0 0. 2ndF % ENTER . Multiply by pressing the × key. 2. Find what percent of 500 is 150. STEP 1: STEP 2: STEP 3: STEP 4: Enter 150 by pressing 1 Enter 500 by pressing 5 The answer is 30%. 5 0 0. 0. % ENTER . Divide by pressing the ÷ key. Calculate by percentage by pressing 2ndF 3 Basic Keyboard/GENERAL MATHEMATICS USING THE SHARP EL-9900 Copyright © 2002, Sharp Electronics Corporation. Permission is granted to photocopy for educational use only. PERCENTS (continued) 3. Add 20% to 300. STEP 1: STEP 2: STEP 3: Enter 300 by pressing 3 Enter 20% by pressing 2 3 0 0 ENTER . The answer is 360. 0 0 0. 2ndF % × Add by pressing the + key. 4. Subtract 40% from 200. STEP 1: STEP 2: STEP 3: Enter 200 by pressing 2 Enter 40% by pressing 4 2 0 0 ENTER . The answer is 120. 0 0 0. 2ndF % × Subtract by pressing the ­ key. 4 Basic Keyboard/GENERAL MATHEMATICS USING THE SHARP EL-9900 Copyright © 2002, Sharp Electronics Corporation. Permission is granted to photocopy for educational use only. MEMORY USAGE Press +­ ×÷ to access the calculation screen. 1. Calculate 2 · 3 and store the value in A. Recall the A to see the product stored in A. STEP 1: STEP 2: STEP 3: STEP 4: Multiply 2 and 3 by pressing 2 The product is 6. Store 6 into A by pressing STO Clear the screen by pressing CL . Recall A by pressing ALPHA A ENTER . ALPHA A ENTER . × 3 ENTER . 2. Calculate 3 · 5 and store the value in M. Calculate 4 · 5 and add this product to M. Then, recall the M to see the sum of the products. STEP 1: STEP 2: STEP 3: STEP 4: Multiply 3 and 5 by pressing 3 The product is 15. Store 15 into M by pressing STO Multiply 4 and 5 by pressing 4 The product is 20. Add 20 to M by pressing + ALPHA M. The sum of the products is 35. × ALPHA 5 M ENTER . ENTER . × 5 ENTER . 3. Recall the previous answer. STEP 1: With the display screen cleared, recall the previous answer by pressing 2ndF ANS ENTER . 5 Basic Keyboard/GENERAL MATHEMATICS USING THE SHARP EL-9900 Copyright © 2002, Sharp Electronics Corporation. Permission is granted to photocopy for educational use only. POWERS AND ROOTS Press +­ ×÷ to access the calculation screen. 1. Calculate 152. STEP 1: STEP 2: STEP 3: Enter 15 by pressing 1 Square by pressing the x The answer is 225. 2 5. key. Calculate by pressing the ENTER key. 2. Calculate 34. STEP 1: STEP 2: STEP 3: STEP 4: Enter 3 by pressing 3 . Exponentiate by pressing the ab key. Enter 4 by pressing 4 . Calculate by pressing the ENTER key. The answer is 81. 3. Calculate STEP 1: STEP 2: STEP 3: 196. Enter the square root by pressing 2ndF Enter 196 by pressing 1 The answer is 14. 9 6. Calculate by pressing the ENTER key. . 6 Basic Keyboard/GENERAL MATHEMATICS USING THE SHARP EL-9900 Copyright © 2002, Sharp Electronics Corporation. Permission is granted to photocopy for educational use only. LOGARITHMS AND EXPONENTIALS Press +­ ×÷ to access the calculation screen. 1. Find log 3. STEP 1: STEP 2: STEP 3: Enter log by pressing MATH Enter 3 by pressing the 3 The answer is 0.4771. A 4. key. Calculate by pressing the ENTER key. 2. Find 10(3÷4). STEP 1: STEP 2: STEP 3: Enter 10 by pressing MATH Enter (3 ÷ 4) by pressing 3 The answer is 5.6234. A ÷ 5. 4. Calculate by pressing the ENTER key. 7 Basic Keyboard/GENERAL MATHEMATICS USING THE SHARP EL-9900 Copyright © 2002, Sharp Electronics Corporation. Permission is granted to photocopy for educational use only. TRIGONOMETRIC FUNCTIONS The definitions of the trigonometric functions with regard to the right triangle can be used to find distances between points. The sine function is defined to be opposite side/hypotenuse, the cosine function is adjacent side/hypotenuse, and the tangent function is opposite side/adjacent side. hypotenuse opposite side adjacent side Put the calclator in degree mode by pressing 2ndF SETUP B 1. 1. Find sin 30°. STEP 1: STEP 2: STEP 3: Press +­ ×÷ to access the calculation screen. 1 3 0. Enter sin 30 by pressing MATH The answer is 0.5. Calculate by pressing the ENTER key. 2. Find 3cos 20°. STEP 1: STEP 2: Enter 3 cos 20 by pressing 3 The answer is 2.819 MATH 2 2 0. Calculate by pressing the ENTER key. 3. Find tan 50°. STEP 1: STEP 2: Enter tan 50 by pressing MATH The answer is 1.19. Remember that cotangent = 1/tangent, secant = 1/cosine, and cosecant = 1/sine. 3 5 0. Calculate by pressing the ENTER key. 8 Basic Keyboard/GENERAL MATHEMATICS USING THE SHARP EL-9900 Copyright © 2002, Sharp Electronics Corporation. Permission is granted to photocopy for educational use only. TRIGONOMETRIC FUNCTIONS (continued) Put the calclator in radian mode by pressing 2ndF SETUP B 2. 1. Find sin 2.1. STEP 1: STEP 2: STEP 3: Press +­ ×÷ to access the calculation screen. 1 2 Enter sin 2.1 by pressing MATH The answer is .8632 . 1. Calculate by pressing the ENTER key. 2. Find cos (-1.7). STEP 1: STEP 2: Enter 3 cos (-1.7) by pressing 3 . 7. MATH 2 (-) 1 Calculate by pressing the ENTER key. The answer is -.3865 3. Find tan 0. STEP 1: STEP 2: Enter tan 0 by pressing MATH The answer is zero. 3 0. Calculate by pressing the ENTER key. 9 Basic Keyboard/GENERAL MATHEMATICS USING THE SHARP EL-9900 Copyright © 2002, Sharp Electronics Corporation. Permission is granted to photocopy for educational use only. ANGLE CONVERSIONS Angles can be expressed in degrees and radians. Degrees can be expressed in either decimal degrees or degrees-minutes-seconds. The sum of the angles of a triangle is 180° or radians. Press +­ ×÷ to access the calculation screen. 1. Convert 30° to radians. Put the calclator in radian mode by pressing 2ndF STEP 1: STEP 2: Enter 30° by pressing 3 The answer is 0.5236. 0 MATH SETUP B 2 +­ ×÷ . 1. Convert to radians by pressing ENTER . 2. Convert 50°35' to decimal degrees. STEP 1: STEP 2: Enter 50°35' by pressing 5 MATH 2. 0 MATH E 1 3 5 Calculate decimal degrees by pressing ENTER . The answer is 50.5833. 10 Basic Keyboard/GENERAL MATHEMATICS USING THE SHARP EL-9900 Copyright © 2002, Sharp Electronics Corporation. Permission is granted to photocopy for educational use only. ANGLE CONVERSIONS (continued) 3. Convert 40.235° to degrees-minutes-seconds. STEP 1: STEP 2: Enter 40.235° by pressing 4 MATH D 2 ENTER . 0 . 2 3 5. Calculate degrees-minutes-seconds by pressing The answer is 40°14'06". 4. Convert 1.25 radians to degrees. Put the calclator in degree mode by pressing 2ndF STEP 1: STEP 2: Enter 1.25 radians by pressing 1 E 4. SETUP B 1 +­ ×÷ . . 2 5 MATH Convert to degrees by pressing ENTER . The answer is 71.6°. 11 Basic Keyboard/GENERAL MATHEMATICS USING THE SHARP EL-9900 Copyright © 2002, Sharp Electronics Corporation. Permission is granted to photocopy for educational use only. PROBABILITY Press +­ ×÷ to access the calculation screen. 1. Find five factorial or 5!. STEP 1: STEP 2: Enter 5! by pressing 5 The answer is 120. MATH C 7. Calculate by pressing ENTER . 2. Find the number of combinations of 2 from a group of 5. STEP 1: STEP 2: STEP 3: Enter the large number 5 by pressing 5 . Enter the combination symbol by pressing MATH Enter the small number 2 and calculate by pressing 2 ENTER . The answer is 10. Permutations are found in the same manner. C 6. 3. Randomly select a person from an ordered group of 10. STEP 1: STEP 2: STEP 3: STEP 4: Access the random integer command by pressing MATH C 2. 1 ,. 0 ). Enter the lower bound of 1 by pressing Enter the upper bound of 10 by pressing 1 Answers will vary. Calculate the random person by pressing ENTER . 12 Basic Keyboard/GENERAL MATHEMATICS USING THE SHARP EL-9900 Copyright © 2002, Sharp Electronics Corporation. Permission is granted to photocopy for educational use only. ONE-VARIABLE STATISTICS 1. Calculate statistics for a one-variable data set. STEP 1: Turn the calculator on and press STAT to enter the statistics menu. Press A (EDIT) ENTER to view the statistics data entry screen. If there is a data set present within the lists on your calculator, use the arrow keys to move to the list, if necessary, and press to highlight the list label. Press DEL of data. STEP 2: Move the highlighter to the cell directly below the L1 in the table. Enter the following data set: 25 32 28 33 31 27 40 38 29 30 ENTER to delete the old data. Repeat for other lists STEP 3: Check the data you have entered and correct any errors you may find. Press 2ndF QUIT to exit the data entry screen. To calculate the numerical descriptions of the data set, press STAT C (CALC) and 1 (1_Stats). Press ENTER and the statistical results will appear. 2. The statistics displayed are: 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. the average or mean value of the data set, x ; the standard deviation assuming the data set is a sample from a population, sx; the standard deviation assuming the data set represents the entire population, x; the sum of the data values, x; the sum of the squared data values, x2; the number of values in the data set, n; the minimum value in the data set, xmin; the first quartile (25th percentile), Q1; the median (50th percentile), Med; the third quartile (75th percentile), Q3; and the maximum value in the data set, xmax. Press five times to see more of the statistics. Press one more time to see the final statistic. 13 Basic Keyboard/GENERAL MATHEMATICS USING THE SHARP EL-9900 Copyright © 2002, Sharp Electronics Corporation. Permission is granted to photocopy for educational use only. HISTOGRAM FOR A ONE-VARIABLE DATA SET Steps for creating a data set's histogram STEP 1: Turn the calculator on, press STAT A (EDIT) ENTER to view the statistics data entry screen. Delete old data sets. STEP 2: Move the highlighter to the cell directly below the L1 in the table and enter the following data set: 15 28 17 36 38 19 13 25 27 41 STEP 3: Check the data you have entered by pressing to move back through the data. STEP 4: To graph a histogram that represents the data set, you must first press STAT PLOT A (PLOT1) and press ENTER . A PLOT1 setup screen ENTER . Set the list to L1 by pressing will appear. Turn the plot on by pressi ...