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Byju's Answer
Standard XII
Mathematics
Real Valued Functions
Let fx be a r...
Question
Let
f
(
x
)
be a real valued function, then the number of integral values of
x
for which
f
(
x
)
=
√
x
+
2
+
√
7
−
x
is defined, is
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Solution
f
(
x
)
=
√
x
+
2
+
√
7
−
x
f
is meaningful if
x
+
2
≥
0
and
7
−
x
≥
0
⇒
x
≥
−
2
and
x
≤
7
⇒
x
∈
[
−
2
,
7
]
Number of integral values in the interval
[
−
2
,
7
]
is
10
.
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Real Valued Functions
Standard XII Mathematics
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