(1,3), с %3D (2,1), d (3,4) (1,2), b (4,2), f (5,3) and (5,5). Let 5. Let a = е 3 - {a, b, c, d, e, f, g} be the set of these 7 points. We define the following partial order on S: We have (r, y)(', y) iff x< x and y < / Draw the Hasse diagram of S S 6. We consider the same partial order as in Problem 5, but it is now defined on R2....
QUESTION 10 The equality relationon any set S is: A total ordering and a function with an inverse. An equivalence relation and also function with an inverse. A function with an inverse, and an equivalence relation with as single equivalence class equal to S An equivalence relation and also a total ordering QUESTION 11 A binary operation on a set S, takes any two elements a,b E S and produces another element c e S. Examples of binary operations include...
3. (8 marks) Let be the set of integers that are not divisible by 3. Prove that is a countable set by finding a bijection between the set and the set of integers , which we know is countable from class. (You need to prove that your function is a bijection.) We were unable to transcribe this imageWe were unable to transcribe this imageWe were unable to transcribe this imageWe were unable to transcribe this image
11. In an introductory calculus course, you may have seen of the form approximation formulas for integrals f(t)dt wf(a,), 2 where the a, are equally spaced points on the interval (a,b) and the u, are certain "weights (giving Riemann sums, trapezoidal sums, or showed that, with the same computational effort (same type of formula) we can get better approximations if we don't require the a, to be equally spaced. Simpson's rule depending on their values). Gauss Consider the space P,...
Formal proof and state which proof style you use
Let a function where f:Z5 → Z5 defined by f(x) = x3 (mod5). a. Is f an injection? Prove or provide a counter example. b. Is fa surjection? Prove or provide a counter example. c. Find the inverse relation of f. Verify that it is the inverse, as we have done in class. d. Is the inverse of f a function? Explain why it is or is not a function.
Advanced Calculus
(3) Let the function f(x) 0 if x Z, but for n e z we have f(n) . Prove that for any interval [a3] the function f is integrable and Ja far-б. Hint: let k be the number of integers in the interval. You can either induct on k or prove integrability directly from the definition or the box-sum criterion.
(3) Let the function f(x) 0 if x Z, but for n e z we have f(n) ....
In class we looked at the example of the potential energy step seen below (where E > U_0). We wrote down the wave functions in complex exponential form as seen below: psi _0 (x) = A' e^i K_0 x + B' e^-i K_0 x x < 0 psi _1 (x) = C' e^i K_1 x + D' e^-i K_1 x x > 0 a) Assume the particles are incident on the barrier from the left, which coefficient can be set...
We now have a set N [see Problem 21 which is a subset of S and also an element of the codomain of F: S- P(S). Let us think about what happens if there exists an element c in S such that Rd = N. In (a) and (b) below, we investigate the consequences of this supposition. a. Is it possible to have c be an element of N? Explain (of course). b s it possible to have c NOT...
6. Let f:A B be a function with domain A and codomain B. Let S and T be subsets of the domain A a) Prove: f(ST)cf(S)n f(T) b) Give an example to show it is possible that f(SOT) f(S)nf (T). Name the domain, codomain, function, and sets S and T c) Let U and V be subsets of the codomain B. Prove: f (Unv)= f"(U)nfV)
a. We have seen in class that we can obtain the estimate of the slope vector B(o) by transforming the data into deviations from the corresponding sample means (for both the response variable Y and the predictors X(o)). And we then regress the transformed Y on the transformed predictors to obtain esti- mates of the slopes. Do we get the same result if we only transform Y? What if we only transform X(o)?
a. We have seen in class that...