To write it in simplest form, you must find a common factor.
In
, 3 is a factor of both 3 and 9
3÷3=1 and 9÷3=3
So
is your answer in simplest form.
In
3÷3=1 and 9÷3=3
So
What is the area of this figure?
2 answers:
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Normalize by dividing
by its magnitude:
Multiply by -1 to reverse its direction, and again by to ensure this new vector has the magnitude we want. Notice that
.