7. Evaluate the determinate1 2(d) 2 52 53|1 58(e) 1 79.5 5 123 2 1(f) 2 3 41 4 1

Answered: Image /qna-images/answer/c55cfeae-b8ca-4b1f-993f-63f394eb50d9.jpg

Answered: 7. Evaluate the determinate |1 2 (d) 2…

Algebra and Trigonometry (6th Edition)

6th Edition

ISBN:9780134463216

Author:Robert F. Blitzer

Publisher:Robert F. Blitzer

ChapterP: Prerequisites: Fundamental Concepts Of Algebra

Section: Chapter Questions

Problem 1MCCP: In Exercises 1-25, simplify the given expression or perform the indicated operation (and simplify,...

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Let 6 30 43 A = -1 -1 1 5 25 35 (a) Compute det(A) = (b) Use Cramer's rule to solve the following system 6x1 -x1 5x1 +302 +43 x3 = -1 - x2 + x3 = 2 +252 + 35x3 = 5 x11 9. x2= 9. x3 =
[-1 1 3 3. Given the matrix A= 0 -1 5 |.Which of the following matrices is A"? |6 7 10| [-1 1 3 A. 0 -1 5 | 6 7 10] [-1 0 6] B. 1 -1 7 |3 5 10 [-1 0 6 C. 1 -1 7 3 5 -10 [-1 0 6] D. 1 -1 7 3 5 10 Г3 27 If M = B – A, then M= 12 Г2 17 4. Given the matrices A=| and B =| 13 A. В. C. [1 -1 D. 0-1
Answer detailly 16, 17 showing all steps
6. Using only elementary row or elementary column operations (without expanding the determinants) show that (а + b) 1 а (6+c) 1 b (c+a) 1 а 1 b b 1 det det 1 a
Explain the determaine
1. Use your knowledge of how elementary row operations affect determinants to find the determinant of A given below. |5 10 15 20 1 |A| = 2 2 3 -3 = 4 9 5 -3 1/6 1/7|
7b.1 Using the determinant, 1 (a - k) e+i(a-k).a i(ak)e+i(a-k)a −i(a+k)e-i(a+k)·ai(ß-k)e-i(ß-k).b (B+ k) De+i(B+k).b 0 = show that the result is given by, - (a²- ß²) 2αβ 1 -(a + k) e-i(a+k).a -1 -(ß-k) - e-i(ß-k).b -1 (B + k) - e+i(B+k).b -sin(aa) sin(ßb) + cos(aa) cos(Bb) = cos[k(a + b)]
7.2 #2 The question is in the picture. Please be as thorough as possible in the explanation. answer a and f
Classify the following operators on R4 by similarity (missing entries are 0): (a) 01 2002 (c) 0 0 0 NEIT -2 0 0 (e) 0 0 0 100 0 0 0 (d) 02 0 3 1 0 0 -1 (b) 1 0 -1 -1 0 40 0 4 00
6. Practice interpreting coefficients and R-squared Suppose you are interested in studying the determinants of wages. You plan to use the following model: wage — Во + Beduc + Bzеzрer+u where wage = annual salary, in thousands of dollars educ = years of education exper = years of work experience You run the ression, and obtain the ving results: wage 12+1.1 eduс + 1.5 егреr n = 200 R = 0.07 The predicted wage for an individual with 12 years of education and 1 year of experience is The predicted wage for an individual with the same years of work experience but one additional year of education (that is, 13 years) is v. The marginal effect of one extra year of education is The R of this regression indicates that v % of the variation in wage is explained by educ and exper together. Suppose you suspect that wages might be affected by the weight of each individual, either through discrimination based on weight by employers or decreased productivity, and therefore wages, brought on by an…

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7. Evaluate the determinate |1 2 (d) 2 5 2 5 7 1 5 8 (e) 1 7 9 5 5 12 3 2 1 (f) 2 3 4 1 4 1