Casio fx-9750G Manual
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Casio fx-9750G Manual

Casio fx-9750G Manual

7. equation calculations
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Equation Calculations

Your graphic calculator can solve the following three types of equa-
tions:
• Linear equations with two to six unknowns
• Quadratic equations
• Cubic equations
7-1
Before Beginning an Equation Calculation
7-2
Linear Equations with Two to Six Unknowns
7-3
Quadratic and Cubic Equations
7-4
What to Do When an Error Occurs
Chapter
7

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Summary of Contents for Casio fx-9750G

  • Page 1: Equation Calculations

    Chapter Equation Calculations Your graphic calculator can solve the following three types of equa- tions: • Linear equations with two to six unknowns • Quadratic equations • Cubic equations Before Beginning an Equation Calculation Linear Equations with Two to Six Unknowns Quadratic and Cubic Equations What to Do When an Error Occurs...

  • Page 2: Before Beginning An Equation Calculations

    7-1 Before Beginning an Equation Calculations Before beginning an equation calculation you have to first enter the correct mode, and you must also clear the equation memories of any data that might be left over from a previous calculation. k k k k k Entering an Equation Calculation Mode Highlight the EQUA icon on the Main Menu and then press w.

  • Page 3: Linear Equations With Two To Six Unknowns

    7-2 Linear Equations with Two to Six Unknowns You can use the procedures described here to solve linear equations with unknowns that match the following formats: x + b y = c Two unknowns x + b y = c x + b y + c z + d...
  • Page 4 7 - 2 Linear Equations with Two to Six Unknowns k k k k k Solving Linear Equations with Three Unknowns Example To solve the following linear equations for , and – 2 = –1 –5 = –7 While in the Linear Equation Mode (SIML), press 2 (3), because the linear equa- tions being solved have three unknowns.
  • Page 5 7 - 2 Linear Equations with Two to Six Unknowns • Internal calculations are performed using a 15-digit mantissa, but results are dis- played using a 10-digit mantissa and 2-digit exponent. • This unit performs simultaneous linear equations by placing the coefficients in- side of a matrix.

  • Page 6: Quadratic And Cubic Equations

    7-3 Quadratic and Cubic Equations This calculator can also solve quadratic and cubic equations that match the following G G G G G formats (when • Quadratic: • Cubic: k k k k k Entering the Quadratic/Cubic Equation Mode While in the Equation Mode, press 2 (POLY). 2(POLY) 3 4 5 6 1(2) .....
  • Page 7 7 - 3 Quadratic and Cubic Equations • Each time you press w, the input value is registered in the highlighted cell. Each press of w inputs values in the following sequence: coefficient coefficient coefficient coefficient Input for coefficient is required only for cubic equations. •...
  • Page 8 7 - 3 Quadratic and Cubic Equations u u u u u To solve a cubic equation that produces an imaginary number solution Example To solve the following cubic equation: – 3 = 0 bwbwbw-dw 1(SOLV) It may take considerable time for the calculation result of cubic equations to appear on the display.

  • Page 9: What To Do When An Error Occurs

    7-4 What to Do When an Error Occurs u u u u u Error during coefficient value input Press the A key to clear the error and return to the value that was registered for the coefficient before you input the value that generated the error. Try inputting a new value again.

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