HP 48gII User Manual page 351

Under-determined system
Consider the system
with
2 3
A
1
The solution using LSQ is shown next:
Over-determined system
Consider the system
with
1
A 2
1
The solution using LSQ is shown next:
2x + 3x –5x = -10,
1 2 3
x – 3x + 8x = 85,
1 2 3
x
1
5
, x ,
x
2
3 8
x
3
x + 3x = 15,
1 2
2x – 5x = 5,
1 2
-x + x = 22,
1 2
3
x
1
5 , x ,
and
x
2
1
10
b .
and
85
15
b 5 .
22
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