In Problems 30 − 33 , use the preceding algorithm to reduce A # and then apply back substitution to solve the equivalent system. Technology might be useful in performing the required row operations. The system in problem 8 . 8. 2 x 1 − x 2 + 3 x 3 = 14 3 x 1 + x 2 − 2 x 3 = − 1 7 x 1 + 2 x 2 − 3 x 3 = 3 5 x 1 − x 2 − 2 x 3 = 5
In Problems 30 − 33 , use the preceding algorithm to reduce A # and then apply back substitution to solve the equivalent system. Technology might be useful in performing the required row operations. The system in problem 8 . 8. 2 x 1 − x 2 + 3 x 3 = 14 3 x 1 + x 2 − 2 x 3 = − 1 7 x 1 + 2 x 2 − 3 x 3 = 3 5 x 1 − x 2 − 2 x 3 = 5
Solution Summary: The author explains how to convert the given system of equations to an augmented matrix and use partial pivoting algorithm to obtain the equivalent matrices and solution.
In Problems
30
−
33
, use the preceding algorithm to reduce
A
#
and then apply back substitution to solve the equivalent system. Technology might be useful in performing the required row operations.
The system in problem
8
.
8.
2
x
1
−
x
2
+
3
x
3
=
14
3
x
1
+
x
2
−
2
x
3
=
−
1
7
x
1
+
2
x
2
−
3
x
3
=
3
5
x
1
−
x
2
−
2
x
3
=
5
Solve the linear system of equations attached using Gaussian elimination (not Gauss-Jordan) and back subsitution.
Remember that:
A matrix is in row echelon form if
Any row that consists only of zeros is at the bottom of the matrix.
The first non-zero entry in each other row is 1. This entry is called aleading 1.
The leading 1 of each row, after the first row, lies to the right of the leading 1 of the previous row.
PRIMERA EVALUACIÓN SUMATIVA
10. Determina la medida de los ángulos in-
teriores coloreados en cada poligono.
⚫ Octágono regular
A
11. Calcula es número de lados qu
poligono regular, si la medida
quiera de sus ángulos internos
• a=156°
A= (-2x+80
2
156 180-
360
0 = 24-360
360=24°
• a = 162°
1620-180-360
6=18-360
360=19
2=360=
18
12. Calcula las medida
ternos del cuadrilá
B
X+5
x+10
A
X+X+
Sx+6
5x=3
x=30
0
лаб
• Cuadrilátero
120°
110°
• α = 166° 40'
200=180-360
0 =
26-360
360=20
ひ=360
20
18 J
60°
⚫a=169° 42' 51.43"
169.4143180-340
0 = 10.29 54-360
360 10.2857
2=360
10.2857
@Sa
Please help I'm a working mom trying to help my son last minute (6th grader)! Need help with the blank ones and check the ones he got with full calculation so we can use it to study! Especially the mixed number fractions cause I'm rusty. Thanks in advance!
Chapter 2 Solutions
Differential Equations And Linear Algebra, Books A La Carte Edition (4th Edition)
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