Let
v
=
4
i
⃗
+
8
j
⃗
\displaystyle {v}={4}\vec{{i}}+{8}\vec{{j}}
v
=
4
i
+
8
j
and
w
=
4
i
⃗
+
2
j
⃗
\displaystyle {w}={4}\vec{{i}}+{2}\vec{{j}}
w
=
4
i
+
2
j
.
Find a number
c
\displaystyle {c}
c
so that
w
−
c
v
\displaystyle {w}-{c}{v}
w
−
c
v
is perpendicular to
v
\displaystyle {v}
v
.
c
=
\displaystyle {c}=
c
=
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\displaystyle
Enter your answer as a number (like 5, -3, 2.2172) or as a calculation (like 5/3, 2^3, 5+4)
Enter DNE for Does Not Exist, oo for Infinity