Sharp El-5020 User Manual
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Sharp EL-5020 Introduction This model of calculator can store up to two calculation programs under 1: and 2:. To store a program, press MODE 1 to enter the AER mode and then press 2ndF _ or 2ndF ` to specify where to store the program. Self-designed program Steps for storing the calculation program for each of the following items are illustrated below. All programs are stored under 1: for illustration purpose. 1. Simultaneous Linear Equations ( 2. Slope and Length ( 3. Cosine...
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Sharp EL-5020 Useful Program Commands The following are some program commands and their corresponding keystrokes under the AER mode. Program Command Keystrokes under the AER mode x ≠ M 2ndF 4 x < M 2ndF 5 x ≤ M 2ndF 6 x = M 2ndF 7 x > M 2ndF 8 x ≥ M 2ndF 9 , 2ndF 3 9 2ndF 2 DRG 2ndF y A ALPHA MODE B ALPHA hyp C ALPHA sin D ALPHA cos E ALPHA tan F ALPHA xPOL M ALPHA M+ - 2 -
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Sharp EL-5020 Simultaneous Linear Equations This program is used to solve simultaneous linear equations in two unknowns in the form of , where a, b, c, d , e and f are real numbers. ⎩ ⎨⎧ =+ =+ feydx cbyax Storing the program: Step 1 2 3 4 5 6 7 Key MODE 1 2ndF _ 2ndF ON/C = Step 8 9 10 11 12 13 14 Key A 9 B 9 C 9 D Step 15 16 17 18 19 20 21 Key 9 E 9 F B - C Step 22 23 24 25 26 27 28 Key E ) ÷ ( B D - Step 29 30 31 32 33 34 35 Key A E STO tan , C -...
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Sharp EL-5020 Executing the program: Examples: (a) Solve the simultaneous linear equations . ⎩ ⎨⎧ =− =− 954 832 yx yx Procedure Display Remark 1. MODE 0 DEG mode 2. 2ndF _ Execute program 1: 3. 2 = 3 +/- = 8 = 4 = 5 +/- = 9 = -6.5 Value of x 4. = -7 Value of y Note: Pressing = after the last procedure allows the program to be executed again. (b) Solve the simultaneous linear equations . ⎩ ⎨⎧ −=+ −=+ 962 83 yx yx Procedure Display Remark 1....
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Sharp EL-5020 (c) Solve the simultaneous linear equations . ⎩ ⎨⎧ −=+ −= 943 82 yx x Procedure Display Remark 1. MODE 0 DEG mode 2. 2ndF _ Execute program 1: 3. 2 = 0 = 8 +/- = 3 = 4 = 9 +/- = -4 Value of x 4. = Er2 The second number input cannot be 0. Notes: (i) Press ON/C to exit the program. (ii) To avoid the error in procedure 4, rearrange as . ⎩ ⎨⎧ −=+ −= 943 82 yx x ⎩ ⎨⎧ −= −=+ 82 943 x yx - 5 -
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Sharp EL-5020 Slope and Length Given two points A(x1, y1) and B(x2, y2), slope of AB 12 12 xx yy − −=, length of AB 212212)()(yyxx−+−=. This program is used to find out the length and slope of the line segment on a rectangular coordinate plane joining two given points. Storing the program: Step 1 2 3 4 5 6 7 Key MODE 1 2ndF _ 2ndF ON/C = Step 8 9 10 11 12 13 14 Key A 9 B 9 C - A Step 15 16 17 18 19 20 21 Key STO sin D - B STO cos Step 22 23 24 25 26 27 28...
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Sharp EL-5020 Executing the program: Examples: (a) Given two points A(1, −4) and B(5, −1), find the length and slope of AB. Procedure Display Remark 1. MODE 0 DEG mode 2. 2ndF _ Execute program 1: 3. 1 = 4 +/- = 5 = 1 +/- = 5 Length of AB 4. = 0.75 Slope of AB Note: Pressing = after the last procedure allows the program to be executed again. (b) Given two points A(3, −4) and B(3, −9), find the length and slope of AB. Procedure Display Remark 1. MODE...
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Sharp EL-5020 Cosine Formula A BCa bc In ∆ABC, Abccbacos2222−+= Baccabcos2222−+= Cabbaccos2222−+= When two sides and their included angle of a triangle are given, this program can be used to find the length of the remaining side of the triangle. Storing the program: Step 1 2 3 4 5 6 7 Key MODE 1 2ndF _ 2ndF ON/C = Step 8 9 10 11 12 13 14 Key √ ( A x2 + B x2 Step 15 16 17 18 19 20 21 Key - 2 A B cos C MODE Step 22 Key 0 - 8 -
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Sharp EL-5020 Executing the program: Example: In ∆ABC, if a = 6, b = 4 and C = 50°, find c. Procedure Display Remark 1. MODE 0 DEG mode 2. 2ndF _ Execute program 1: 3. 6 = 4 = 5 0 = 4.598499183 Length of c Note: Pressing = after the last procedure allows the program to be executed again. - 9 -
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Sharp EL-5020 Heron’s Formula Given three sides a, b and c of a triangle, A BCa bc area of ∆ABC ))()((csbsass−−−= where 2 cbas++=. This program is used to calculate the area of a triangle when three sides are given. Storing the program: Step 1 2 3 4 5 6 7 Key MODE 1 2ndF _ 2ndF ON/C = Step 8 9 10 11 12 13 14 Key A STO cos B + D STO Step 15 16 17 18 19 20 21 Key cos C + D STO cos D Step 22 23 24 25 26 27 28 Key ÷ 2 STO cos √ ( D Step 29...