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Byju's Answer
Standard X
Mathematics
Solving a Quadratic Equation by Completion of Squares Method
The inverse L...
Question
The inverse Laplace Tranform of
1
s
2
+
2
s
is,
A
(
1
−
e
−
2
t
)
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B
(
1
+
e
+
2
t
)
2
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C
(
1
−
e
+
2
t
)
2
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D
(
1
−
e
−
2
t
)
2
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Solution
The correct option is
D
(
1
−
e
−
2
t
)
2
L
−
1
[
1
s
2
+
2
s
]
=
L
−
1
[
1
s
(
s
+
2
)
]
=
L
−
1
[
1
2
(
2
+
s
−
s
s
(
s
+
2
)
)
]
=
1
2
L
−
1
[
1
s
−
1
s
+
2
]
=
1
2
(
1
−
e
−
2
t
)
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1
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