Finding Lengths, Unit Vectors , and Dot Products In Exercises 29-34, use a software program or a graphing utility to find (a) the lengths of u and v, (b) a unit vector in the direction of v, (c) a unit vector in the direction opposite that of u, (d) u ⋅ v , (e) u ⋅ u , and (f) v ⋅ v . u = ( 0 , 1 , 2 ) , v = ( 2 , − 1 , − 2 )
Finding Lengths, Unit Vectors , and Dot Products In Exercises 29-34, use a software program or a graphing utility to find (a) the lengths of u and v, (b) a unit vector in the direction of v, (c) a unit vector in the direction opposite that of u, (d) u ⋅ v , (e) u ⋅ u , and (f) v ⋅ v . u = ( 0 , 1 , 2 ) , v = ( 2 , − 1 , − 2 )
Solution Summary: The author calculates the length of the given vectors: sqrt3and2.
Finding Lengths, Unit Vectors, and Dot ProductsIn Exercises 29-34, use a software program or a graphing utility to find (a) the lengths of u and v, (b) a unit vector in the direction of v, (c) a unit vector in the direction opposite that of u, (d)
u
⋅
v
, (e)
u
⋅
u
, and (f)
v
⋅
v
.
u
=
(
0
,
1
,
2
)
,
v
=
(
2
,
−
1
,
−
2
)
Quantities that have magnitude and direction but not position. Some examples of vectors are velocity, displacement, acceleration, and force. They are sometimes called Euclidean or spatial vectors.
Evaluate the following expression and show your work to support your calculations.
a). 6!
b).
4!
3!0!
7!
c).
5!2!
d). 5!2!
e).
n!
(n - 1)!
Amy and Samiha have a hat that contains two playing cards, one ace and one king. They are playing a game where they randomly pick a card out of the hat four times, with replacement.
Amy thinks that the probability of getting exactly two aces in four picks is equal to the probability of not getting exactly two aces in four picks. Samiha disagrees. She thinks that the probability of not getting exactly two aces is greater.
The sample space of possible outcomes is listed below. A represents an ace, and K represents a king. Who is correct?
Consider the exponential function f(x) = 12x. Complete the sentences about the key features of the graph.
The domain is all real numbers.
The range is y> 0.
The equation of the asymptote is y = 0
The y-intercept is 1
Chapter 5 Solutions
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