Learning. For a person learning to type, the number N of words per minute that the person could type after t hours of practice was given by the limited growth function N = 100 ( 1 − e − 0.02 t ) What is the rate of improvement after 10 hours of practice? After 40 hours of practice?
Learning. For a person learning to type, the number N of words per minute that the person could type after t hours of practice was given by the limited growth function N = 100 ( 1 − e − 0.02 t ) What is the rate of improvement after 10 hours of practice? After 40 hours of practice?
Solution Summary: The author compares the rate of improvement of a person learning to type after 10 hours of practice and 40 hours.
Learning. For a person learning to type, the number N of words per minute that the person could type after t hours of practice was given by the limited growth function
N
=
100
(
1
−
e
−
0.02
t
)
What is the rate of improvement after 10 hours of practice? After 40 hours of practice?
The boom OA carries a load P and is supported by two cables as shown. Knowing that the tension in cable AB is 190 lb and that the
resultant of the load P and of the forces exerted at A by the two cables must be directed along OA, determine the tension in cable AC.
29 in.
B
24 in.
36 in.
C
25 in.
48 in..
A
Find the distance (d) from the point (8, -7, -1) to the plane 3x+5y-3z = -60.
The 60-lb collar A can slide on a frictionless vertical rod and is connected as shown to a 65-lb counterweight C. Draw the free-body
diagram of the collar that is needed to determine the value of h for which the system is in equilibrium.
-15 in.
A
60 lb
B
C
h
65 lb
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