Need help with part A and B a)c)d)inverse.AFind det (A¹²).Find det (5A).401Use the algorithm from Section 2.2 to show that A is invertible and find itsb)Find the determinant of A in two different ways: using cofactor expansionalong the first row and using cofactor expansion along the third column.02-1332-2

Answered: Image /qna-images/answer/0fb2b84a-a00c-47c0-b0ba-df5147b7d30f.jpg

Answered: Need help with part A and B

Advanced Engineering Mathematics

10th Edition

ISBN:9780470458365

Author:Erwin Kreyszig

Publisher:Erwin Kreyszig

Chapter2: Second-order Linear Odes

Section: Chapter Questions

Problem 1RQ

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City A lies on the north bank of a river that is 1 mile wide. You need to run a phone cable from City A to City B, which lies on the opposite bank a miles down the river. You will lay L miles of the cable along the north shore of the river, and from the end of that stretch of cable you will lay W miles of cable running under water directly toward City B. (See the figure below.) City A 1 mile 10 a miles You will need the following fact about right triangles: A right triangle has two legs, which meet at the right angle, and the hypotenuse, which is the longest side. An ancient and beautiful formula, the Pythagorean theorem, relates the lengths of the three sides: Length of hypotenuse = √Length of one leg2+ Length of other leg². (a) If a 8, use an appropriate right triangle to find a formula for W in terms of L. 8 City B (b) Find a formula for the length of the total phone cable P from City A to City B as a function of L. (c) Make a graph of the total phone cable length P as a function of…
. Explain what primary concept does the proof of the Root test use?
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(2) (2) (2) (2) བྱེ བྱ བྱེ བྱེ བྱེ 1.1 1.2 Reamorata is a student at Nelson Mandela Metropolitan University (NMMU) Vista Campus in Port Elizabeth. ANNEXURE A shows a map/plan of the layout of the campus where he attends classes. Use ANNEXURE A to answer the questions that follow. 1.1.1 Identify the type of map/plan used and write it down. 1.1.2 Give one purpose of the building marked as number 15. 1.1.3 Name the province where Port Elizabeth is situated. 1.1.4 What symbol is used to show parking on the campus? 1.1.5 How many lecture halls are shown on the map/plan. In picture 1 and picture 2 two clocks are shown. 10 PICTURE 1 12 112 2 PICTURE 2 9 00 8 4. 765 5:44 LITE Use the information above to answer the questions that follow. 1.2.1 Name the two time formats used to display the time on the clocks. 1.2.2 Write down, in words, the time displayed on the clock in picture 2. 1.2.3 Convert 13 hours 57 minutes to hours. (2) (2) (2)
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In soccer, serious fouls result in a penalty kick with one kicker and one defending goalkeeper. The accompanying table summarizes results from 306 kicks during games among top teams. In the table, jump direction indicates which way the goalkeeper jumped, where the kick direction is from the perspective of the goalkeeper. Use a 0.05 significance level to test the claim that the direction of the kick is independent of the direction of the goalkeeper jump. Do the results support the theory that because the kicks are so fast, goalkeepers have no time to react, so the directions of their jumps are independent of the directions of the kicks? E Click the icon to view the penalty kick data. Determine the null and alternative hypotheses. A. Ho: Jump direction is independent of kick direction. H: Jump direction is dependent on kick direction. O B. Ho: Goalkeepers jump in the direction of the kick. H,: Goalkeepers do not jump in the direction of the kick. O C. Ho: Goalkeepers do not jump in the…

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