Draining a tank (Torricelli’s law) A cylindrical tank with a cross-sectional area of 10 m 2 is filled to a depth of 25 m with water. At t = 0 s. a drain in the bottom of the tank with an area of 1 m 2 is opened, allowing water to flow out of the tank. The depth of water in the tank (in meters) at time t ≥ 0 is d ( t ) = ( 5 − 0.22 t ) 2 . a. Check that d (0) = 25. as specified b. At what time is the tank empty? c. What is an appropriate domain for d ?
Draining a tank (Torricelli’s law) A cylindrical tank with a cross-sectional area of 10 m 2 is filled to a depth of 25 m with water. At t = 0 s. a drain in the bottom of the tank with an area of 1 m 2 is opened, allowing water to flow out of the tank. The depth of water in the tank (in meters) at time t ≥ 0 is d ( t ) = ( 5 − 0.22 t ) 2 . a. Check that d (0) = 25. as specified b. At what time is the tank empty? c. What is an appropriate domain for d ?
Draining a tank (Torricelli’s law) A cylindrical tank with a cross-sectional area of 10 m2 is filled to a depth of 25 m with water. At t = 0 s. a drain in the bottom of the tank with an area of 1 m2 is opened, allowing water to flow out of the tank. The depth of water in the tank (in meters) at time
t
≥
0
is
d
(
t
)
=
(
5
−
0.22
t
)
2
.
A factorization A = PDP 1 is not unique. For A=
7 2
-4 1
1
1
5 0
2
1
one factorization is P =
D=
and P-1
30
=
Use this information with D₁
=
to find a matrix P₁ such that
-
-1 -2
0 3
1
-
- 1
05
A-P,D,P
P1
(Type an integer or simplified fraction for each matrix element.)
Matrix A is factored in the form PDP 1. Use the Diagonalization Theorem to find the eigenvalues of A and a basis for each eigenspace.
30 -1
-
1 0 -1
400
0
0 1
A=
3 4 3
0 1 3
040
3 1 3
0 0
4
1
0
0
003
-1 0 -1
Select the correct choice below and fill in the answer boxes to complete your choice.
(Use a comma to separate vectors as needed.)
A basis for the corresponding eigenspace is {
A. There is one distinct eigenvalue, λ =
B. In ascending order, the two distinct eigenvalues are λ₁
...
=
and 2
=
Bases for the corresponding eigenspaces are {
and ( ), respectively.
C. In ascending order, the three distinct eigenvalues are λ₁ =
=
12/2
=
and 3 = Bases for the corresponding eigenspaces are
{}, }, and {
respectively.
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