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Mathematics
Mathematics
Problem
The value of
λ
\lambda
λ
for which the four points
2
i
^
+
3
j
^
−
k
^
2\hat{i} + 3\hat{j} - \hat{k}
2
i
^
+
3
j
^
−
k
^
,
i
^
+
2
j
^
+
3
k
^
\hat{i} + 2\hat{j} + 3\hat{k}
i
^
+
2
j
^
+
3
k
^
,
3
i
^
+
4
j
^
−
2
k
^
3\hat{i} + 4\hat{j} - 2\hat{k}
3
i
^
+
4
j
^
−
2
k
^
and
i
^
−
λ
j
^
+
6
k
^
\hat{i} - \lambda\hat{j} + 6\hat{k}
i
^
−
λ
j
^
+
6
k
^
are coplanar a. 8 b. 0 c. -2 d. 6
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