The vectors a and b are given in terms of two perpendicular units vectors i and j on a plane by a = 2i - 3j, b = -i + 2j. Find the magnitude of the vector a + 3b
a
2
b
4
c
\(\sqrt{10}\)
d
35
e
2.2
Explanation
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yungfeezy23
9 years ago
Here is an explanation:
from -i + 3j
/v/ = sqrtroot((-1)^2 + (3)^2)
/v/ = sqrtroot(1 + 9)
/v/ = sqrtroot(10)
