Find an expression for the vector AC in terms of a and b.
a-b
2b-a
a+b
3a-b
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Answers
Answered by
1
Answer:
Let position vector of C=
Step-by-step explanation:
Let position vector of C=
c
Let position vector of D=
d
AC
=
c
−
a
AB
=
b
−
a
BD
=
d
−
b
BA
=
a
−
b
AC=3AB
⇒
c
−
a
=3(
b
−
a
)
⇒
c
−
a
=3
b
−3
a
⇒
c
=3
b
−2
a
⇒
BD
=2
BA
⇒
d
−
b
=2(
b
−
a
)
⇒
d
−
b
=2
b
−2
a
⇒
d
=3
b
Answered by
3
Answer:
2b-a
Step-by-step explanation:
ans is this
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