Problem 7. Let X be a set. Suppose dı and d2 are two different metrics on X and there exists constants c, k > 0 such that Vx, y E X : cdi(x, y) < d2(x, y) < k d1 (x, y). Let (xn)1 be a sequence in X. Show that limn-0 Xn = x in (X, d1) if and only if limn→0 *n = x in (X, d2).
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- A designer is creating various open-top boxes by cutting four equally-sized squares from the corners of a standard sheet of 8.5 inch by 11 inch paper, and then folding up and securing the resulting 'flaps' to be the sides of the box. Let x represent the varying side length of the square cutouts in inches. Let l,w, and h represent the varying length, width and height of the box (in inches), respectively. Note that the width and length dimensions are such that w<l . Let V represent the varying volume of the box in cubic inches. Write formulas for length, width, and volume of the box, each in terms of x .l= w= h= V=A designer is creating various open-top boxes by cutting four equally-sized squares from the corners of a standard sheet of 8.5 inches by 11-inch paper, and then folding up and securing the resulting 'flaps' to be the sides of the box. Let x represent the varying side length of the square cutouts in inches. Let l,w, and h represent the varying length, width, and height of the box (in inches), respectively. Note that the width and length dimensions are such that w<l. Let V represent the varying volume of the box in cubic inches.The points A(1, 0, 2), B(2, 0, 1) and C(1, 2, k) from a triangle of area √6. Determine the value(s) of K for which this is true
- The intersection of sets Y and E isOn parable y=x^2/2 set point, which distance from point P=(4,1) is minimal.Suppose that receiving stations X, Y, and Z are located on a coordinate plane at the points (4,4), (−12,−4), and (−6,9), respectively. The epicenter of an earthquake is determined to be 5 units from X, 13 units from Y, and 10 units from Z. Where on the coordinate plane is the epicenter located?
- Using the data from sections 2.15,2.16, & 2.19 show that these statements are true. (photos of 2.15,2.16, & 2.19 below) a) Σ(x+y) = Σx + Σy b) Σxy ≠ ΣxΣy c) Σcx = cΣx d) Σx2 ≠ (Σx)26. Analyze whether the following sets are convex: Please make the answers step by step as explicit as possible. thank you a) A = {(x, y) ∈ R2 : y ≥ x2}b) B = {x, y) ∈ R2 : y ≥ |x|}c) C = {x, y) ∈ R2 : x2 + 3y2 ≤ xy + 5}d) D = {(x, y, z) ∈ R3 : x + y = 2; z = 5}e) A ∩ Bf ) C1 = {(x, y, z) ∈ R3 : 2x − 5 + z ≤ 5, x < 16}.g) C2={(x,y,z,w)∈R4:x−3y=x+2w}.h) C3={(x,y)∈R2:x2+y2≤16}.i ) C4={(x,y)∈R2:2xy−x2−y2≥4}.I need help with this discrete mathematics problem involving partitions and equivilence classes
- Question 1. Draw a digraph for cach of the following relations. (a) Let A = {a, b. c, d) and let R ((a, b), (b, d). (a, d). (d, a), (d, b),(b, a), (c. c)}. (b) Let A= {1, 2. 3, 4, 5, 6, 7, 8} and let x Ry whenever y is divisible by x. (c) Let A = {1, 2, 3, 4, 5, 6, 7, 8) and let x Ry whenever x and y share nocommon factor other than 1 Question 2. Determine which of the relations given in Exxercise I are reflexive, which aresymmetric, which are transitive, which are antisymmetric, and which areirreflexive. Question 4.Let R be the relation on N defined by x Ry ifr and y share a common factorother than 1. Determine the refexivity and transitivity of R. Question 7. Find the matrix that represents each of the relations given in Question 1. Question 8. Draw the digraph of the relation defined on {aj, az, a3, a, by the matrixa d2 d3 d4a0 01 I11a2 0 0 I1a3 1 00a1 0 0 0this is a topology question.Let A and B be two sets such that n(A) = 3 and n(B) = 2. If (x, 1), (y, 2), (z, 1)are in A × B, find A and B, where x, y and z are distinct elements.