Challenge Problem Coaster Motion A wooden roller snider at Six Flags contains a run in the shape of a sinusoidal curve, with a series of hills. The crest of each hill is 106 feet above the ground. If it takes a car 1.8 seconds to go from the top of a hill to the bottom ( 4 feet off the ground), find a sinusoidal function of the form y = A sin ( ω χ − ϕ ) + B that models the motion of the coaster train dining this run starting at the top of a hill.
Challenge Problem Coaster Motion A wooden roller snider at Six Flags contains a run in the shape of a sinusoidal curve, with a series of hills. The crest of each hill is 106 feet above the ground. If it takes a car 1.8 seconds to go from the top of a hill to the bottom ( 4 feet off the ground), find a sinusoidal function of the form y = A sin ( ω χ − ϕ ) + B that models the motion of the coaster train dining this run starting at the top of a hill.
Challenge Problem Coaster Motion A wooden roller snider at Six Flags contains a run in the shape of a sinusoidal curve, with a series of hills. The crest of each hill is
106
feet above the ground. If it takes a car
1.8
seconds to go from the top of a hill to the bottom (
4
feet off the ground), find a sinusoidal function of the form
y
=
A
sin
(
ω
χ
−
ϕ
)
+
B
that models the motion of the coaster train dining this run starting at the top of a hill.
1. A bicyclist is riding their bike along the Chicago Lakefront Trail. The velocity (in
feet per second) of the bicyclist is recorded below. Use (a) Simpson's Rule, and (b)
the Trapezoidal Rule to estimate the total distance the bicyclist traveled during the
8-second period.
t
0 2
4 6 8
V
10 15
12 10 16
2. Find the midpoint rule approximation for
(a) n = 4
+5
x²dx using n subintervals.
1° 2
(b) n = 8
36
32
28
36
32
28
24
24
20
20
16
16
12
8-
4
1
2
3
4
5
6
12
8
4
1
2
3
4
5
6
=
5 37
A 4 8 0.5
06
9
Consider the following system of equations, Ax=b :
x+2y+3z - w = 2
2x4z2w = 3
-x+6y+17z7w = 0
-9x-2y+13z7w = -14
a. Find the solution to the system. Write it as a parametric equation. You can use a
computer to do the row reduction.
b. What is a geometric description of the solution? Explain how you know.
c. Write the solution in vector form?
d. What is the solution to the homogeneous system, Ax=0?
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