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Simultaneous Linear Equations
Two Unknowns Simultaneous Linear Equation:
a
1
x + b
1
y = c
1
a
2
x + b
2
y = c
2
Three Unknowns Simultaneous Linear Equation:
a
1
x + b
1
y + c
1
z = d
1
a
2
x + b
2
y + c
2
z = d
2
a
3
x + b
3
y + c
3
z = d
3
Example:
Solve the simultaneous equation with three unknowns:
2x + 4y – 4z = 20
2x – 2y + 4z = 8
5x – 2y – 2z = 20
Example:
Solve the cubic equation 5x
3
+ 2x
2
– 2x+1 = 0
Quadratic or Cubic Equations
Quadratic equation : ax
2
+ bx + c = 0 (a second-order polynomial
equation in a single variable x)
Cubic equation
: ax
3
+ bx
2
+ cx + d = 0 (an equation with cubic
polynomial)
Operation
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Operation
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Summary of Contents for F-788SG
Page 1: ...F 788SG USER INSTRUCTION ENGLISH E IE 444 ...
Page 4: ...3 DISPLAY 2 LINE DISPLAY Up Arrow Down Arrow ...
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Page 15: ...14 To input the negative vaues use ...
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Page 18: ...17 Mark up and Discount 820 mark up 25 820 have 25 discount ...
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Page 20: ...19 F 788SG ...
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Page 25: ...24 enter the conversion menu select ft2 convert to m2 calculate the answer ...
Page 26: ...25 To clear the setting refer page 13 ...
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Page 52: ...51 VECTOR CALCULATIONS ...
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