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Mathematics
Mathematics
Problem
If
a
=
i
^
+
j
^
+
k
^
\mathbf{a} = \hat{i} + \hat{j} + \hat{k}
a
=
i
^
+
j
^
+
k
^
,
b
=
i
^
+
j
^
−
k
^
\mathbf{b} = \hat{i} + \hat{j} - \hat{k}
b
=
i
^
+
j
^
−
k
^
, then vectors perpendicular to
a
\mathbf{a}
a
and
b
\mathbf{b}
b
is/are a.
λ
(
i
^
+
j
^
)
\lambda(\hat{i} + \hat{j})
λ
(
i
^
+
j
^
)
b.
λ
(
i
^
+
j
^
+
k
^
)
\lambda(\hat{i} + \hat{j} + \hat{k})
λ
(
i
^
+
j
^
+
k
^
)
c.
λ
(
i
^
−
j
^
)
\lambda(\hat{i} - \hat{j})
λ
(
i
^
−
j
^
)
d. None of these
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