User Manual
Page 543
Chapter 17: Activities The Quadratic Formula Entering a Calculation Use the quadratic formula to enter more than one instruction on the same line. The colon allows you to solve the quadratic equations 3X2 + 5X + 2 = 0 and 2X2 N X + 3 = 0. TI-83 Plus Activities 540 Press 5 ¿ ƒ [B] (above ) to enter a new instruction on a line. 3. Begin with the equation 3X2 + 5X + 2 = 0. 1. Press 2 ¿...
Chapter 17: Activities The Quadratic Formula Entering a Calculation Use the quadratic formula to enter more than one instruction on the same line. The colon allows you to solve the quadratic equations 3X2 + 5X + 2 = 0 and 2X2 N X + 3 = 0. TI-83 Plus Activities 540 Press 5 ¿ ƒ [B] (above ) to enter a new instruction on a line. 3. Begin with the equation 3X2 + 5X + 2 = 0. 1. Press 2 ¿...
User Manual
Page 544
... next line, ready for the equation 3X2 + 5X + 2 = 0. Press Í to store the values to enter the next expression. TI-83 Plus Activities 541 Press Í to the next line, ready for the quadratic formula, −b± b2−4ac 2a 6. The cursor moves to find one of the display. The last value you to...
... next line, ready for the equation 3X2 + 5X + 2 = 0. Press Í to store the values to enter the next expression. TI-83 Plus Activities 541 Press Í to the next line, ready for the quadratic formula, −b± b2−4ac 2a 6. The cursor moves to find one of the display. The last value you to...
User Manual
Page 545
The Quadratic Formula Converting to display the MATH menu. 2. Press to a Fraction You can show the solution as a fraction. 1. Press 1 to a fraction. Press Í to convert the result to select 1:4Frac from the MATH menu. Ans is displayed on the home screen. When you press 1, Ans4Frac is a variable that contains the last calculated answer. 3. TI-83 Plus Activities 542
The Quadratic Formula Converting to display the MATH menu. 2. Press to a Fraction You can show the solution as a fraction. 1. Press 1 to a fraction. Press Í to convert the result to select 1:4Frac from the MATH menu. Ans is displayed on the home screen. When you press 1, Ans4Frac is a variable that contains the last calculated answer. 3. TI-83 Plus Activities 542
User Manual
Page 546
Press } to recall the quadratic-formula expression, −b+ b2−4ac 2a 5. Press Í to become: −b− b2−4ac 2a 6. To save keystrokes, you can recall the last expression you entered, and then edit it for the quadratic equation 3X2 + 5X + 2 = 0. TI-83 Plus Activities 543 Press y [ (above Í) to recall the fraction conversion entry, and then press y [ again to move the cursor onto the + sign in the formula. Press ¹ to edit the quadraticformula expression to find the other solution for a new calculation. 4.
Press } to recall the quadratic-formula expression, −b+ b2−4ac 2a 5. Press Í to become: −b− b2−4ac 2a 6. To save keystrokes, you can recall the last expression you entered, and then edit it for the quadratic equation 3X2 + 5X + 2 = 0. TI-83 Plus Activities 543 Press y [ (above Í) to recall the fraction conversion entry, and then press y [ again to move the cursor onto the + sign in the formula. Press ¹ to edit the quadraticformula expression to find the other solution for a new calculation. 4.
User Manual
Page 547
...; [B] ƒ [ : ] 3 ¿ ƒ [C] Í. The Quadratic Formula Displaying Complex Results Now solve the equation 2X2 N X + 3 = 0. Press y 5 (above z) to return to the home screen, and then press ' to A, B, and C, respectively. Press Í to position the cursor over a+bi. TI-83 Plus Activities 544 When you set a+bi complex number mode, the TI-83 Plus displays complex results. 1. Press z 6 times...
...; [B] ƒ [ : ] 3 ¿ ƒ [C] Í. The Quadratic Formula Displaying Complex Results Now solve the equation 2X2 N X + 3 = 0. Press y 5 (above z) to return to the home screen, and then press ' to A, B, and C, respectively. Press Í to position the cursor over a+bi. TI-83 Plus Activities 544 When you set a+bi complex number mode, the TI-83 Plus displays complex results. 1. Press z 6 times...
User Manual
Page 548
4. Press y [ to recall the store instruction, and then press y [ again to find the other solution for the quadratic equation: 2X2 N X + 3 = 0. Note: An alternative for solving equations for the equation 2X2 N X + 3 = 0. 6. TI-83 Plus Activities 545 Press Í to recall the quadratic-formula expression, −b− b2−4ac 2a 5. Press y [ repeatedly until this quadraticformula expression is to find one solution for real numbers is displayed: −b+ b2−4ac 2a 7. Press Í to use the built-in Equation Solver (Chapter 2).
4. Press y [ to recall the store instruction, and then press y [ again to find the other solution for the quadratic equation: 2X2 N X + 3 = 0. Note: An alternative for solving equations for the equation 2X2 N X + 3 = 0. 6. TI-83 Plus Activities 545 Press Í to recall the quadratic-formula expression, −b− b2−4ac 2a 5. Press y [ repeatedly until this quadraticformula expression is to find one solution for real numbers is displayed: −b+ b2−4ac 2a 7. Press Í to use the built-in Equation Solver (Chapter 2).
User Manual
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... of linear equations, 256 unit circle, 246 TI-83 Plus Index volume of curves, 131 Fill(, 276, 663 FINANCE CALC menu, 446 FINANCE VARS menu, 462 financial functions amortization schedules, 454 771 inequalities, 566 mortgage payments, 592 parametric equations, ferris wheel problem, 580 piecewise functions, 564 quadratic formula converting to -expression conversion), 491, 662 ExpReg...
... of linear equations, 256 unit circle, 246 TI-83 Plus Index volume of curves, 131 Fill(, 276, 663 FINANCE CALC menu, 446 FINANCE VARS menu, 462 financial functions amortization schedules, 454 771 inequalities, 566 mortgage payments, 592 parametric equations, ferris wheel problem, 580 piecewise functions, 564 quadratic formula converting to -expression conversion), 491, 662 ExpReg...
User Manual
Page 821
... TI-83 Plus Key Code Diagram 532 ClrHome, ClrTable 532 GetCalc 533 Get(, Send 533 Calling Other Programs as Subroutines 535 Calling a Program from Another Program 535 Notes about Calling Programs 536 Running an Assembly Language Program 537 Chapter 17: Activities 540 The Quadratic Formula ...540 Entering a Calculation 540 Converting to a Fraction 542 Displaying Complex Results 544 Box with Lid 546 Defining a Function 546 TI-83 Plus Quick-Find Locator xxx
... TI-83 Plus Key Code Diagram 532 ClrHome, ClrTable 532 GetCalc 533 Get(, Send 533 Calling Other Programs as Subroutines 535 Calling a Program from Another Program 535 Notes about Calling Programs 536 Running an Assembly Language Program 537 Chapter 17: Activities 540 The Quadratic Formula ...540 Entering a Calculation 540 Converting to a Fraction 542 Displaying Complex Results 544 Box with Lid 546 Defining a Function 546 TI-83 Plus Quick-Find Locator xxx