4. What is the value of Dy, for solving the simultaneous equation
3x + y = 1 and 2x – 11y = 3 by Cramer's rule?
Answers
Answered by
0
Answer:
sorru
Step-by-step explanation:
for you are doing good for the delay and it will work out and I don't
Answered by
3
Answer:
Given equations are
3
x
+
y
=
1
and
2
x
=
11
y
+
3
For cramers rule, We first find
D
=
(
3
1
2
−
11
)
⇒
|
D
|
=
∣
∣
∣
3
1
2
−
11
∣
∣
∣
=
3
×
−
11
−
1
×
2
=
−
33
−
2
=
−
35
For
x
matrix
D
x
=
[
1
1
3
−
11
]
⇒
[
D
x
]
=
∣
∣
∣
1
1
3
−
11
∣
∣
∣
=
1
×
−
11
−
1
×
3
=
−
11
−
3
=
−
14
For
y
matrix
D
y
=
[
3
1
2
3
]
⇒
[
D
y
]
=
∣
∣
∣
3
1
2
3
∣
∣
∣
=
3
×
3
−
1
×
2
=
9
−
2
=
7
Therefore,
x
=
D
x
D
=
−
14
−
35
=
2
5
and
y
=
D
y
D
=
7
−
35
=
−
1
5
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