Generating integer matrices with integer inverses For certain simulations, it is con venient to have a collection of randomly-generated matrices that have integer entries and whose inverses also have integer entries. Argue, using Theorem 14, that an integer matrix with determinant equal to 1 or - will have an integer inverse. One easy way to create an integer matrix A with determinant equal to 1 or -1 is to set A LU where L is a lower-triangular integer matrix with l's and -'s on its diagonal and where U is an upper-triangular integer matrix with l's and -1's on its diagonal. Then, since det(A) det(L) det(U), we see that both A and A will be integer matrices Use these ideas to create a set of ten randomly generated (5 x 5) integer matrices with integer inverses. For each matrix A created, use the MATLAB inv command to generate the inverse for A. Note, because of roundoff error, that the MATLAB inverse for A is not always an integer matrix. To eliminate the roundoff error, you can use the command round (inv (A)) in order to round the entries of A-1 to the nearest integer. Check, by direct multiplication, that this will produce the inverse.

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assuming you are in the home page.

1) go to the upper right hand corner

2) click on your "profile picture"

3) go down to "edit profile"

4) it should be titled as "edit your profile", click on "profile picture"

5) choose a file

6) press "change"

you're profile picture is updated

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the benefits of raising bc’s minimum wage to $15 through a

series of pre-announced staged increases far outweigh the likely

costs. claims that such an increase will lead to massive job losses

in low-wage sectors of the economy are not credible.

• an increase to $15 would result in some job losses. however,

the likely impact is less than a 1 per cent reduction in the overall

provincial employment rate, and a 7.6 per cent reduction in the

employment rate for those currently making between $10.25

and $15 per hour.

• the large job loss impacts predicted by some opponents of

minimum wages misrepresent the existing economic research. in

reading and using that research, it is important to recognize that

estimates showing job loss effects of minimum wage increases

apply only to teenagers. estimated effects for young adult and

adult workers range from insignificant to non-existent.

• focusing on teenage workers plays up an inaccurate stereotype

about who earns very low wages in bc and leads to exaggerated

claims about job losses. only 26 per cent of those currently making

between $10.25 and $12 are teenagers, and only 5 per cent

of those making between $12 and $15 are teenagers.