Given v = 4 , − 3 and w = 2 , − 2 , a. Find proj w v . b. Find vectors v 1 and v 2 such that v 1 , is parallel to w, v 2 is orthogonal to w, and v 1 + v 2 = v . c. Using the results from part (b) show that v 1 is parallel to w by finding a constant c such that v 1 = c w . d. Show that v 2 is orthogonal to w. e. Show that v 1 + v 2 = v .
Given v = 4 , − 3 and w = 2 , − 2 , a. Find proj w v . b. Find vectors v 1 and v 2 such that v 1 , is parallel to w, v 2 is orthogonal to w, and v 1 + v 2 = v . c. Using the results from part (b) show that v 1 is parallel to w by finding a constant c such that v 1 = c w . d. Show that v 2 is orthogonal to w. e. Show that v 1 + v 2 = v .
Solution Summary: The author calculates the vector projection v=4,-3andw =2,-2.
b. Find vectors
v
1
and
v
2
such that
v
1
, is parallel to w,
v
2
is orthogonal to w, and
v
1
+
v
2
=
v
.
c. Using the results from part (b) show that
v
1
is parallel to w by finding a constant c such that
v
1
=
c
w
.
d. Show that
v
2
is orthogonal to w.
e. Show that
v
1
+
v
2
=
v
.
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.
Consider the function f(x) = x²-1.
(a) Find the instantaneous rate of change of f(x) at x=1 using the definition of the derivative.
Show all your steps clearly.
(b) Sketch the graph of f(x) around x = 1. Draw the secant line passing through the points on the
graph where x 1 and x->
1+h (for a small positive value of h, illustrate conceptually). Then,
draw the tangent line to the graph at x=1. Explain how the slope of the tangent line relates to the
value you found in part (a).
(c) In a few sentences, explain what the instantaneous rate of change of f(x) at x = 1 represents in
the context of the graph of f(x). How does the rate of change of this function vary at different
points?
1. The graph of ƒ is given. Use the graph to evaluate each of the following values. If a value does not exist,
state that fact.
и
(a) f'(-5)
(b) f'(-3)
(c) f'(0)
(d) f'(5)
2. Find an equation of the tangent line to the graph of y = g(x) at x = 5 if g(5) = −3 and g'(5)
=
4.
-
3. If an equation of the tangent line to the graph of y = f(x) at the point where x 2 is y = 4x — 5, find ƒ(2)
and f'(2).
College Algebra with Modeling & Visualization (5th Edition)
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