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Byju's Answer
Standard XII
Mathematics
Cramer's Rule
The system of...
Question
The system of equations ax + 3y = 1, –12x + ay = 2 has ________ for all real values of a.
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Solution
The given system of equations are:
ax + 3y = 1 ...(i)
–12x + ay = 2 ...(ii)
Now,
a
1
a
2
=
a
-
12
b
1
b
2
=
3
a
c
1
c
2
=
-
1
-
2
=
1
2
If
a
1
a
2
=
b
1
b
2
⇒
a
-
12
=
3
a
⇒
a
2
=
-
36
Which
is
not
possible
for
any
value
of
a
.
Thus
,
a
1
a
2
≠
b
1
b
2
for
all
real
values
of
a
.
Hence, the system of equations ax + 3y = 1, –12x + ay = 2 has
a unique solution
for all real values of a.
Suggest Corrections
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