Fermi
·
Concept Library
·
Courses
·
Books
·
Problems
·
Simulations
·
Math Wiki
·
High School
Fermi
›
Problems
Mathematics
Mathematics
Problem
If
a
⃗
,
b
⃗
,
c
⃗
\vec{a}, \vec{b}, \vec{c}
a
,
b
,
c
are three non-coplanar vectors, then
3
a
⃗
−
7
b
⃗
−
4
c
⃗
3\vec{a} - 7\vec{b} - 4\vec{c}
3
a
−
7
b
−
4
c
,
3
a
⃗
−
2
b
⃗
+
c
⃗
3\vec{a} - 2\vec{b} + \vec{c}
3
a
−
2
b
+
c
and
a
⃗
+
b
⃗
+
λ
c
⃗
\vec{a} + \vec{b} + \lambda\vec{c}
a
+
b
+
λ
c
will be coplanar, if
λ
\lambda
λ
is a. -1 b. 1 c. 3 d. 2
Browse the problem library