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Byju's Answer
Standard IX
Mathematics
Conditions on the Domain and the Range of the Logarithmic Function
The value of ...
Question
The value of
x
satisfying the logarithm
log
243
x
=
0.8
is equal to
A
81
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B
1.8
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C
2.43
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D
27
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Solution
The correct option is
A
81
Given,
log
243
x
=
0.8
⇒
243
0.8
=
x
⇒
(
3
5
)
4
/
5
=
x
⇒
3
4
=
x
⇒
x
=
81
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