Two bugs are walking along lines in 3-space. At time t bug 1 is at the point x , y , z on the line x = 4 − t , y = 1 + 2 t , z = 2 + t and at the same time t bug 2 is at the point x , y , z on the line x = t , y = 1 + t , z = 1 − 1 − 2 t Assume that distance is in centimeters and that time is in minutes. (a) Find the distance between the bugs at time t = 0. (b) Use a graphing utility to graph the distance between the bugs as a function of time from t = 0 to t = 5. (c) What does the graph tell you about the distance between the bugs? (d) How close do the bugs get?
Two bugs are walking along lines in 3-space. At time t bug 1 is at the point x , y , z on the line x = 4 − t , y = 1 + 2 t , z = 2 + t and at the same time t bug 2 is at the point x , y , z on the line x = t , y = 1 + t , z = 1 − 1 − 2 t Assume that distance is in centimeters and that time is in minutes. (a) Find the distance between the bugs at time t = 0. (b) Use a graphing utility to graph the distance between the bugs as a function of time from t = 0 to t = 5. (c) What does the graph tell you about the distance between the bugs? (d) How close do the bugs get?
Two bugs are walking along lines in 3-space. At time t bug 1 is at the point
x
,
y
,
z
on the line
x
=
4
−
t
,
y
=
1
+
2
t
,
z
=
2
+
t
and at the same time t bug 2 is at the point
x
,
y
,
z
on the line
x
=
t
,
y
=
1
+
t
,
z
=
1
−
1
−
2
t
Assume that distance is in centimeters and that time is in minutes.
(a) Find the distance between the bugs at time
t
=
0.
(b) Use a graphing utility to graph the distance between the bugs as a function of time from
t
=
0
to
t
=
5.
(c) What does the graph tell you about the distance between the bugs?
4. Use method of separation of variable to solve the following wave equation
მłu
J²u
subject to
u(0,t) =0, for t> 0,
u(л,t) = 0, for t> 0,
=
t> 0,
at²
ax²'
u(x, 0) = 0,
0.01 x,
ut(x, 0) =
Π
0.01 (π-x),
0
Solve the following heat equation by method of separation variables:
ди
=
at
subject to
u(0,t) =0, for
-16024
ძx2 •
t>0, 0 0,
ux (4,t) = 0, for
t> 0,
u(x, 0) =
(x-3,
\-1,
0 < x ≤2
2≤ x ≤ 4.
ex
5.
important aspects.
Graph f(x)=lnx. Be sure to make your graph big enough to easily read (use the space given.) Label all
6
33
University Calculus: Early Transcendentals (4th Edition)
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