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Byju's Answer
Standard XII
Mathematics
Inductive Step
Show that the...
Question
Show that the statement "For any real number
a
and
b
,
a
2
=
b
2
implies that
a
=
b
" is not ture by giving a counter-example.
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Solution
Let
a
=
1
,
b
=
−
1
Here,
a
2
=
b
2
but
a
≠
b
.
Hence we observe that the given statement is not true.
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Similar questions
Q.
Show that the statement “For any real numbers a and b , a 2 = b 2 implies that a = b ” is not true by giving a counter-example.
Q.
For any two complex numbers
z
1
,
z
2
and any two real numbers
a
,
b
show that
|
a
z
1
−
b
z
2
|
2
+
|
b
z
1
+
a
z
2
|
2
=
(
a
2
+
b
2
)
(
|
z
1
|
2
+
|
z
2
|
2
)
.
Q.
Assertion :Statement-1 : If
a
,
b
in
R
and
a
<
b
, then there is atleast one real number
c
∈
(
a
,
b
)
such that
c
a
+
b
=
b
2
+
a
2
4
c
2
.
Reason: Statement-2 : If
f
(
x
)
is continuous in
[
a
,
b
]
and derivable in
(
a
,
b
)
&
f
′
(
c
)
=
0
for atleast one
c
∈
(
a
,
b
)
, then it necessarily implies that
f
(
a
)
=
f
(
b
)
.
Q.
For real a, b, c show that
a
2
+
b
2
+
c
2
≥
a
b
+
b
c
+
c
a
.
Q.
If
a
,
b
and
c
are real numbers and
a
2
+
b
2
+
c
2
−
a
b
−
b
c
−
c
a
=
0
then show that
a
=
b
=
c
?
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