Let {dn}n≥0 denote the number of integer solutions a1 +a2 +a3 +a4 = n where 0 ≤ ai ≤ 5 for each i = 1, 2, 3, 4. Write the ordinary generating function for {cn}n≥0. Please express the ordinary generating function as a rational function p(x) /q(x) where both p(x) and q(x) are polynomials in the variable x.
Let {dn}n≥0 denote the number of integer solutions a1 +a2 +a3 +a4 = n where 0 ≤ ai ≤ 5 for each i...
Matrix notation: A=(a1,a2,a3.....,an) = [a1 a2 a3 a4 .....an] are they equal? look at the sample picture A should be matrix but it uses ( ) rather than [ ] Given that A is an n×n matrix with the property AX = 0 for all X " 1 A=(a,,a,, 0 0 Let a.) Let e, =| | | ← ith element Comment
3. A sequence is a map a N°R, typically written (an) = (ao, a1, a2, a3, a4,) As an example, the sequence (an) = 1/(n2 +1) begins (1, 1/2, 1/5, 1/10, 1/17,..) Here is a useful fact relating sequences and continuity: A function f(x) is continuous at x c if and only if for every sequence (an) that converges to c, written anc, then f(x,) f(c). Alternatively, if you and f(yn)L" with L' L", then f is not continuous at...
Urgent!!! Please show all the answers and clearly mark them and please show values of a1,a2,a3,a4,a5 and b1-b6. Thank you! (1 point) The second order equation x2y" + xy + (x2 - y = 0 has a regular singular point at x = 0, and therefore has a series solution y(x) = Σ C+*+r N=0 The recurrence relation for the coefficients can be written in the form of C.-2, n = 2,3,.... Ch =( (The answer is a function of...
Question 6: Let n 2 2 be an integer and let ai,a2,...,an be a permutation of the set (1, 2, . . . ,n). Define ao = 0 and an+1 = 0, and consider the sequence do, 1, d2, l3, . . . , Un, Un+1 A position i with 1 i n is called auesome, if ai > ai-1 and ai > ai+1. In words, i is awesome if the value at position i is larger than both its...
Urgent!! Please show mark all correct answers and also find values of a1,a2,a3,a4,a5,a6 and b1,b2,b3,b4,b5,b6. Thank you! (1 point) The second order equation x?y" + xy' +(x2 - y = 0 has a regular singular point at x = 0, and therefore has a series solution y(x) = Σ CGxhtr P=0 The recurrence relation for the coefficients can be written in the form of n = 2, 3, ... C =( Jan-2 (The answer is a function of n and...
Let N = a,, l0" + . . . + a2 I 02 + al 10 + ao, where 0 a、 9, be the decimal expan- sion of a positive integer N. (a) Prove that 7, 11, and 13 all divide N if and only if 7, 11, and 13 divide the integer (100a2 + 10a1 +ao) - (100as + 10a4 + a3) +(100as 10a7 + a6) -... M Let N = a,, l0" + . . . + a2...
Urgent!! Please label all the answers and find a1,a2,a3 and b1,b2,b3. (1 point) The second order equation x2y" - (x – ķ) y = 0 has a regular singular point at x = 0, and therefore has a series solutio y(x) = Σ CnN+r n=0 The recurrence relation for the coefficients can be written in the form Cn =( DCn-1, n = 1,2, ..., (The answer is a function of n and r.) The general solution can be written in...
Hi there, I literally got stuck on this question, it would be great if someone can give me help, many thanks in advance! A polynomial on R is a function p : R -R of the form p(x) - aj' where each ai E R and at most finitely many ai are nonzero. Let P denote the set of all polynomials on R (a) What is the dimension of P, regarded as a vector space over R? You do not...
(a) Consider a discrete-time signal v[n] satisfying vn0 except if n is a multiple of some fixed integer N. i.e oln] -0, otherwise where m is an integer. Denote its discrete-time Fourier transform by V(eJ"). Define y[nl-v[Nn] Express Y(e) as a function of V(e). Hint : If confused, start with N-2 (b) Consider the discrete-time signal r[n] with discrete-time Fourier transform X(e). Now, let z[n] be formed by inserting two zeroes between any two samples of x[n]. Give a formula...
Problem 10.13. Recal that a polynomial p over R is an expression of the form p(x) an"+an--+..+ar +ao where each aj E R and n E N. The largest integer j such that a/ 0 is the degree of p. We define the degree of the constant polynomial p0 to be -. (A polynomial over R defines a function p : R R.) (a) Define a relation on the set of polynomials by p if and only if p(0) (0)...