Answered step by step

Verified Expert Solution

Link Copied!

Question

1 Approved Answer

Posted on Jun 24, 2022

4 1 [ 9 is a unit in the ring Mat2x2 (Z). Find a matrix B M(Z) that is not a unit in Mat22(Z),

4 1 [ 9 is a unit in the ring Mat2x2 (Z). Find a matrix B M(Z) that is not a unit in Mat22(Z), but is a unit in Mat2x2(Q). 2 Show that A =

Step by Step Solution

★★★★★

3.32 Rating (161 Votes )

There are 3 Steps involved in it

Step: 1

A Since AE Maxx 2 and also X2 Q So by A L adj A A ... blur-text-image

Get Instant Access to Expert-Tailored Solutions

See step-by-step solutions with expert insights and AI powered tools for academic success

Step: 2

Step: 3

Ace Your Homework with AI

Get the answers you need in no time with our AI-driven, step-by-step assistance

Get Started

Recommended Textbook for

Discrete and Combinatorial Mathematics An Applied Introduction

Authors: Ralph P. Grimaldi

5th edition

201726343, 978-0201726343

More Books

Students also viewed these Accounting questions

Question

★★★★★

a. Determine the multiplicative inverse of the matrix in the ring ^{2)- that is, find a, b, c, d so that b. Show that s a unit in the ring M2(Q) but not a unit in M2 (Z). 7 1 2a b Ct 5 3

Answered: 1 week ago

Question

★★★★★

The following additional information is available for the Dr. Ivan and Irene Incisor family from Chapters 1-5. Ivan's grandfather died and left a portfolio of municipal bonds. In 2012, they pay Ivan...

Answered: 1 week ago

Question

★★★★★

The idea is that elementary operations can be accomplished by matrix multiplication. If A is an m x n matrix on which we want to do an elementary operation, then there is a matrix E such that EA is...

Answered: 1 week ago

Question

★★★★★

State the date (or dates) on which corporation tax is due for payment in relation to the following periods of account: (a) the year to 31 March 2021 (b) the six months to 30 November 2020 (c) the 21...

Answered: 1 week ago

Question

★★★★★

The file S02_11.xlsx contains data on 148 houses that were recently sold in a (fictional) suburban community. The data set includes the selling price of each house, along with its appraised value,...

Answered: 1 week ago

Question

★★★★★

Figure shows two isotropic point sources of light (S1 and S2) that emit in phase at wavelength 400 nm and at the same amplitude. A detection point P is shown on an x axis that extends through source...

Answered: 1 week ago

Question

★★★★★

Discuss how students beliefs and attributions about control, the nature of knowledge, mindsets, and self-worth can influence motivation.

Answered: 1 week ago

Question

★★★★★

a. Prepare line graphs of each of the six expenditure categories. Indicate whether each category appears to be stationary or nonstationary. b. Use Holts method to create models for each expenditure...

Answered: 1 week ago

Question

★★★★★

This question is a statics problem analyzing vectors using the jupyter notebook in python (anaconda navigator) Q1. Python Question. Consider the vectors: A = 3 + 3 + 4 B = l 39 + 2 = 2 3j + 2 =-2+...

Answered: 1 week ago

Question

★★★★★

The following cross tabulation shows the average speed of the 25 winners by year of the Daytona 500 automobile race (The 2013 World Almanac). a. Calculate the row percentages. b. W hat is the...

Answered: 1 week ago

Question

★★★★★

elected financial information ( in 0 0 0 s ) from the financial statements of Moosomin Ltd . for Years 6 and 7 is as follows: Year 6 Year 7 Sales revenue $ 1 , 2 5 0 $ 1 , 3 5 0 Cost of goods sold 7...

Answered: 1 week ago

Question

★★★★★

Please solve COMPANY NAME: HONDA Brief introduction to company and its product Presentation of global inputs for the product Company's motivations for supplier selection and sourcing the inputs...

Answered: 1 week ago

Question

★★★★★

1.Now imagine that, with the introduction of money, financial institutions are put in place. Briefly , would the establishment and development of a financial sector help promote economic growth or...

Answered: 1 week ago

Question

★★★★★

Contrary to the strategy of maintaining a large inventory adopted by most American retailers, 7-11 is more selective in the products that they put on shelves. 7-11 chooses to shelve products that are...

Answered: 1 week ago

Question

★★★★★

AApproximate air as a mixture of 7 8 % Nitrogen and 2 2 % oxygen ( by moles ) . Calculate the followings for air using values you find in ( A . 5 ) . Be careful about units. ( a ) Specific gas...

Answered: 1 week ago

Question

★★★★★

(7) (2 pts) Location update is an important task to perform as a mobile unit moves around in a mobile IP network. If we use indirect-routing, new location update only needs to be done at the home...

Answered: 1 week ago

Question

★★★★★

Network administrators often use _ _ _ _ to query these devices on their network to check for performance or any types of errors.

Answered: 1 week ago

Question

★★★★★

7. FALSE DILEMMA 8. GANDWAGON Definition: Fallacy example: How to revise argument: Definition: Fallacy example: How to revise argument:

Answered: 1 week ago

Question

★★★★★

(a) For f, g, h: Bn B, prove that fg + h + gh = fg + h and that fg + f + g + = 1. (b) State the dual of each result in part (a).

Answered: 1 week ago

Question

★★★★★

Prove that a ring R is commutative if and only if (a + b)2 = a2 + 2ab + b2, for all a, b R.

Answered: 1 week ago

Question

★★★★★

Let G = (V, E) be a loop-free connected undirected graph with |V| 3. If G has no articulation points, prove that G has no pendant vertices.

Answered: 1 week ago

Question

★★★★★

McDonald's executives want to experiment with redesigning its restaurants so that the customers form one line leading to four registers to place orders, rather than four lines leading to four...

Answered: 1 week ago

Question

★★★★★

A researcher wants to know if students who do not plan to apply for financial aid had more variability on the SAT I math test than those who plan to do so. She obtains a random sample of 35 students...

Answered: 1 week ago

Question

★★★★★

Stocks may be categorized by sectors. Go to www.pearsonhighered.com/sullivanstats to obtain the data file 11_3_17 using the file format of your choice for the version of the text you are using. The...

Answered: 1 week ago

Previous Question Next Question