The function defined by A t = 100 e 0.0318 t approximates the equivalent amount of money needed t years after the year 2010 to equal $100 of buying power in the year 2010. The value 0.0318 is related to the average rate of inflation. a. Evaluate A 15 and interpret its meaning in the context of this problem b. Verify that by the year 2032, more than $200 will be needed to have the same buying power as $100 in 2010.
The function defined by A t = 100 e 0.0318 t approximates the equivalent amount of money needed t years after the year 2010 to equal $100 of buying power in the year 2010. The value 0.0318 is related to the average rate of inflation. a. Evaluate A 15 and interpret its meaning in the context of this problem b. Verify that by the year 2032, more than $200 will be needed to have the same buying power as $100 in 2010.
Solution Summary: The author calculates the equivalent amount of money needed after 15years if the function A(t)=100e0.0318t
The function defined by
A
t
=
100
e
0.0318
t
approximates the equivalent amount of money needed t years after the year 2010 to equal
$100
of buying power in the year 2010. The value 0.0318 is related to the average rate of inflation.
a. Evaluate
A
15
and interpret its meaning in the context of this problem
b. Verify that by the year 2032, more than
$200
will be needed to have the same buying power as
$100
in 2010.
1. Show that the vector field
F(x, y, z)
=
(2x sin ye³)ix² cos yj + (3xe³ +5)k
satisfies the necessary conditions for a conservative vector field, and find a potential function for
F.
1. Newton's Law of Gravitation (an example of an inverse square law) states that the magnitude
of the gravitational force between two objects with masses m and M is
|F|
mMG
|r|2
where r is the distance between the objects, and G is the gravitational constant. Assume that the
object with mass M is located at the origin in R³. Then, the gravitational force field acting on
the object at the point r = (x, y, z) is given by
F(x, y, z) =
mMG
r3
r.
mMG
mMG
Show that the scalar vector field f(x, y, z) =
=
is a potential function for
r
√√x² + y² .
Fi.e. show that F = Vf.
Remark: f is the negative of the physical potential energy, because F = -V(-ƒ).
2. Suppose f(x) = 3x² - 5x. Show all your work for the problems below.
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