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Byju's Answer
Standard XII
Mathematics
How to Find the Inverse of a Function
If fx=2x-5,...
Question
If
f
(
x
)
=
2
x
−
5
, then what is
f
(
0
)
?
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Solution
f
(
0
)
=
−
5
To solve the problem substitute
0
for each occurrence of
x
in the function and the calculate the result.
f
(
x
)
=
2
x
−
5
becomes
f
(
0
)
=
(
2
×
0
)
−
5
f
(
0
)
=
0
−
5
f
(
0
)
=
−
5
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0
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