For Exercises 53-54, use the model d = a e − c t cos ω t or d = a b k t cos w t to represent damped harmonic motion. A pendulum is pulled π 18 radians to one side and then released. The angular displacement θ follows a pattern of damped harmonic motion with each cycle lasting 2 sec . If the maximum displacement for each cycle decreases by 20 % , find a function that models the angular displacement t sec after being released.
For Exercises 53-54, use the model d = a e − c t cos ω t or d = a b k t cos w t to represent damped harmonic motion. A pendulum is pulled π 18 radians to one side and then released. The angular displacement θ follows a pattern of damped harmonic motion with each cycle lasting 2 sec . If the maximum displacement for each cycle decreases by 20 % , find a function that models the angular displacement t sec after being released.
Solution Summary: The author explains the function that models the angular displacement of the pendulum after time, t, following a pattern of damped harmonic motion.
For Exercises 53-54, use the model
d
=
a
e
−
c
t
cos
ω
t
or
d
=
a
b
k
t
cos
w
t
to represent damped harmonic motion.
A pendulum is pulled
π
18
radians to one side and then released. The angular displacement
θ
follows a pattern of damped harmonic motion with each cycle lasting
2
sec
. If the maximum displacement for each cycle decreases by
20
%
, find a function that models the angular displacement
t
sec
after being released.
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).
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