Prove that the proof by mathematical induction and the proof by strong induction are equivalent
In: Advanced Math
Use Theorem 4.2.1 to determine which of the following sets of vectors are subspaces of F(−∞,∞). (Justify!)
(a) The set of all functions f ∈ F(−∞,∞) for which f(0) = 0.
(b) The set of all functions f ∈ F(−∞,∞) for which f(1) = 0.
(c) The set of all functions f ∈ F(−∞,∞) for which f(0) = 1.
(d) The set of all functions f ∈ F(−∞,∞) for which f(−x) = f(x) for all x ∈ R
In: Advanced Math
Let M be the integer corresponding to the first letter of your last name. For example, if your last name begins with "A", M=1 and if your last name begins with "Z", M=26.
Let k=1/M and consider the logistic equation dy/dt = k y (M - y).
Construct a single figure including
Last name starts with a P
In: Advanced Math
1. Explain how to convert positive integers from base 3 to base 10 and vice versa. Include examples.
2. Explain how to convert fractions from base 3 to base 10 and vice versa. Include examples.
In: Advanced Math
Prove that the equivalence classes of an equivalence relation form a partition of the domain of the relation. Namely, suppose ? be an equivalence relation on a set ? and define the equivalence class of an element ?∈? to be
[?]?:={?∈?|???}.
That is [?]?=?(?). Divide your proof into the following three peices:
In: Advanced Math
Below is a proof of Theorem 4.1.1 (b): For the zero vector ⃗0 in any vector space V and k ∈ R, k⃗0 = ⃗0.
Justify for each of the eight steps why it is true.
k⃗0+k⃗0=k(⃗0+⃗0)
= k ⃗0
k⃗0 is in V
and therefore −(k⃗0) is in V .
It follows that (k⃗0 + k⃗0) + (−k⃗0) = (k⃗0) + (−k⃗0)
and thus k⃗0 + (k⃗0 + (−k⃗0)) = (k⃗0) + (−k⃗0).
We conclude that k⃗0 + ⃗0 = ⃗0
and so k⃗0 = ⃗0, as desired.
In: Advanced Math
Indicate which of the following relations below are equivalence relations, strict partial orders, (weak) partial orders. If a relation is none of the above, indicate whether it is transitive, symmetric, or asymmetric. I won't be grading proofs of your results here, but I highly suggest you know how to prove your results.
In: Advanced Math
Use 3 steps of the Runge-Kutta (fourth order) method to solve
the following differential equation to t = 2.4, given that y(0) =
2.3. In your working section, you must provide full working for the
first step. To make calculations easier, round the tabulated value
of y at each step to four decimal places.
a) Provide the four K-values that are calculated at the first step,
with four decimal places. b) Provide your answer for y(2.4) with
four decimal places.
(dy /dt) = 1.1ty
In: Advanced Math
Use 4 steps of the Modified Euler’s method to solve the following
differential equation to t = 2.6, given that y(0) = 1.1. In your
working section, you must provide full working for the first two
steps. To make calculations easier, round the calculations at each
step to four decimal places, and provide your final answer with four
decimal places. dy/ dt = 1.4sin(ty)
In: Advanced Math
If the infimum of a bounded set E does not exist in E, then why must E have a limit point. And if the infimum does exist in E, why is it inconclusive?
In: Advanced Math
The tank in the form of a right-circular cone of radius 7 feet and height 39 feet standing on its end, vertex down, is leaking through a circular hole of radius 4 inches. Assume the friction coefficient to be c=0.6 and g=32ft/s^2 . Then the equation governing the height h of the leaking water is
dhdt=_______________
If the tank is initially full, it will take _________ seconds to empty.
In: Advanced Math
Let x1 > 1 and xn+1 := 2−1/xn for n ∈ N. Show that xn is bounded and monotone. Find the limit. Prove by induction
In: Advanced Math
Using only real numbers between 0 and 100, inclusive, show the set of three numbers whose product is 64 and whose sum is minimal is give by {4, 4, 4}.
(a) When is an absolute minimum or maximum guaranteed?
(b) State the steps to find an absolute minimum and maximum.
(c) Is the space closed and bounded? Explain.
(d) Use Lagrange Multipliers to find the minimum and maximum
please label and write neatly.
In: Advanced Math
Consider an SEIR model with both horizontal and
vertical transmission. What assumption can you make about the new
born of mothers from the E and I compartment. Should the infected
new born enter the E compartment or I compartment or both? Think of
the possibilities. Draw a transfer diagram according to the
different assumptions you made and derive the corresponding
differential equations.
Note that :
S = susceptible
E = exposed
I = infectious
R = recovery
In: Advanced Math
Let T∈ L(V), and let p ∈ P(F) be a polynomial. Show that if p(λ) is an eigenvalue of p(T), then λ is an eigenvalue of T. Under the additional assumption that V is a complex vector space, and conclude that {μ | λ an eigenvalue of p(T)} = {p(λ) | λan eigenvalue of T}.
In: Advanced Math