Steady states If a function f represents a system that varies in time, the existence of lim t → ∞ f ( t ) means that the system reaches a steady state (or equilibrium). For the following systems, determine whether a steady slate exists and give the steady -state value . 75. The amplitude of an oscillator is given by a ( t ) = 2 ( t + sin t t ) .
Steady states If a function f represents a system that varies in time, the existence of lim t → ∞ f ( t ) means that the system reaches a steady state (or equilibrium). For the following systems, determine whether a steady slate exists and give the steady -state value . 75. The amplitude of an oscillator is given by a ( t ) = 2 ( t + sin t t ) .
Solution Summary: The author explains the steady state of the function a(t)=2 (t+mathrmsin
Steady statesIf a function f represents a system that varies in time, the existence of
lim
t
→
∞
f
(
t
)
means that the system reaches a steady state (or equilibrium). For the following systems, determine whether a steady slate exists and give the steady -state value.
75. The amplitude of an oscillator is given by
a
(
t
)
=
2
(
t
+
sin
t
t
)
.
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.
Chapter 2 Solutions
Single Variable Calculus: Early Transcendentals, Books a la Carte, and MyLab Math with Pearson eText -- Title-Specific Access Card Package (3rd Edition)
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