The probability of precipitation in Modesto, California, varies from a peak of 0.34 34 % in January to a low of 0.04 4 % in July. Assume that the percentage of precipitation varies monthly and behaves like a cosine curve. a. Write a function of the form P t = A cos B t − C + D to model the precipitation probability. The value P t is the probability of precipitation (as a decimal), for month t with January as t = 1 . b. Graph the function from part (a) on the interval 0 , 13 and plot the points 1 , 0.34 , 7 , 0.04 , and 13 , 0.34 to check the accuracy of your model.
The probability of precipitation in Modesto, California, varies from a peak of 0.34 34 % in January to a low of 0.04 4 % in July. Assume that the percentage of precipitation varies monthly and behaves like a cosine curve. a. Write a function of the form P t = A cos B t − C + D to model the precipitation probability. The value P t is the probability of precipitation (as a decimal), for month t with January as t = 1 . b. Graph the function from part (a) on the interval 0 , 13 and plot the points 1 , 0.34 , 7 , 0.04 , and 13 , 0.34 to check the accuracy of your model.
The probability of precipitation in Modesto, California, varies from a peak of
0.34
34
%
in January to a low of
0.04
4
%
in July. Assume that the percentage of precipitation varies monthly and behaves like a cosine curve.
a. Write a function of the form
P
t
=
A
cos
B
t
−
C
+
D
to model the precipitation probability. The value
P
t
is the probability of precipitation (as a decimal), for month
t
with January as
t
=
1
.
b. Graph the function from part (a) on the interval
0
,
13
and plot the points
1
,
0.34
,
7
,
0.04
, and
13
,
0.34
to check the accuracy of your model.
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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