The minute hand of a clock moves from 12 : 10 to 12 : 15 . a. How many degrees does it move during this time? b. How many radians does it move during this time? c. If the minute hand is 9 in . in length, determine the exact distance that the tip of the minute hand travels during this time. d. Determine the exact angular speed of the minute hand in radians per minute. e. What is the exact linear speed (in inches per minute) of the tip of the minute hand? f. What is the amount of area that the minute hand sweeps out during this time? Give the exact area in terms of π and then approximate to the nearest square inch.
The minute hand of a clock moves from 12 : 10 to 12 : 15 . a. How many degrees does it move during this time? b. How many radians does it move during this time? c. If the minute hand is 9 in . in length, determine the exact distance that the tip of the minute hand travels during this time. d. Determine the exact angular speed of the minute hand in radians per minute. e. What is the exact linear speed (in inches per minute) of the tip of the minute hand? f. What is the amount of area that the minute hand sweeps out during this time? Give the exact area in terms of π and then approximate to the nearest square inch.
Solution Summary: The author calculates the number of degrees in the minute hand of a clock during the time from 12:10 to 12,15.
The minute hand of a clock moves from
12
:
10
to
12
:
15
.
a. How many degrees does it move during this time?
b. How many radians does it move during this time?
c. If the minute hand is
9
in
.
in length, determine the exact distance that the tip of the minute hand travels during this time.
d. Determine the exact angular speed of the minute hand in radians per minute.
e. What is the exact linear speed (in inches per minute) of the tip of the minute hand?
f. What is the amount of area that the minute hand sweeps out during this time? Give the exact area in terms of
π
and then approximate to the nearest square inch.
nd
ave a
ction and
ave an
48. The domain of f
y=f'(x)
x
1
2
(=
x<0
x<0
= f(x)
possible.
Group Activity In Exercises 49 and 50, do the following.
(a) Find the absolute extrema of f and where they occur.
(b) Find any points of inflection.
(c) Sketch a possible graph of f.
49. f is continuous on [0,3] and satisfies the following.
X
0
1
2
3
f
0
2
0
-2
f'
3
0
does not exist
-3
f"
0
-1
does not exist
0
ve
tes where
X
0 < x <1
1< x <2
2
Numerically estimate the value of limx→2+x3−83x−9, rounded correctly to one decimal place.
In the provided table below, you must enter your answers rounded exactly to the correct number of decimals, based on the Numerical Conventions for MATH1044 (see lecture notes 1.3
Actions
page 3). If there are more rows provided in the table than you need, enter NA for those output values in the table that should not be used.
x→2+
x3−83x−9
2.1
2.01
2.001
2.0001
2.00001
2.000001
Find the general solution of the given differential equation.
(1+x)dy/dx - xy = x +x2
Elementary Statistics: Picturing the World (7th Edition)
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