1st Edition

ISBN: 9781938168383

Author: Jay Abramson

Publisher: OpenStax

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In the study of the conic section of the geometry, An ellipse is a plane curve surrounding two focal points, or foci where the set of all locus of points in the plane has their sum of the distances to the two foci is constant. On the ellipse curve, it is…

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Textbook Question

Chapter 8.1, Problem 28SE

For the following exercises, find the foci for the given ellipses.

28. ( x + 1 ) 2 100 + ( y − 2 ) 2 4 = 1

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Chapter 8.1, Problem 27SE

Chapter 8.1, Problem 29SE

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Question 3 over a field K. In this question, MË(K) denotes the set of n × n matrices (a) Suppose that A Є Mn(K) is an invertible matrix. Is it always true that A is equivalent to A-¹? Justify your answer. (b) Let B be given by 8 B = 0 7 7 0 -7 7 Working over the field F2 with 2 elements, compute the rank of B as an element of M2(F2). (c) Let 1 C -1 1 [4] [6] and consider C as an element of M3(Q). Determine the minimal polynomial mc(x) and hence, or otherwise, show that C can not be diagonalised. [7] (d) Show that C in (c) considered as an element of M3(R) can be diagonalised. Write down all the eigenvalues. Show your working. [8]

R denotes the field of real numbers, Q denotes the field of rationals, and Fp denotes the field of p elements given by integers modulo p. You may refer to general results from lectures. Question 1 For each non-negative integer m, let R[x]m denote the vector space consisting of the polynomials in x with coefficients in R and of degree ≤ m. x²+2, V3 = 5. Prove that (V1, V2, V3) is a linearly independent (a) Let vi = x, V2 = list in R[x] 3. (b) Let V1, V2, V3 be as defined in (a). Find a vector v € R[×]3 such that (V1, V2, V3, V4) is a basis of R[x] 3. [8] [6] (c) Prove that the map ƒ from R[x] 2 to R[x]3 given by f(p(x)) = xp(x) — xp(0) is a linear map. [6] (d) Write down the matrix for the map ƒ defined in (c) with respect to the basis (2,2x + 1, x²) of R[x] 2 and the basis (1, x, x², x³) of R[x] 3. [5]

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Chapter 8 Solutions

College Algebra

Ch. 8.1 - What is the standard form equation of the ellipse...Ch. 8.1 - What is the standard form equation of the ellipse...Ch. 8.1 - Graph the ellipse given by the equation x236+y24=1...Ch. 8.1 - Graph the ellipse given by the equation...Ch. 8.1 - Graph the ellipse given by the equation...Ch. 8.1 - Express the equation of the ellipse given in...Ch. 8.1 - Suppose a whispering chamber is 480 feet long and...Ch. 8.1 - Define an ellipse in terms of its foci.Ch. 8.1 - Where must the foci of an ellipse lie?Ch. 8.1 - What special case of the ellipse do we have when...

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