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1 2 3conductn? EicllMerrHee emual 5...

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1 2 3conductn? EicllMerrHee emual 5

1 2 3 conductn? Eicll MerrHee emual 5



Answers

$\left[ \begin{array}{rr}{1} & {5} \\ {1} & {-3}\end{array}\right]$

To find these two matrices together. Here. First thing we need to do is check the dimensions will work. Okay? First matrix we've got is two rows three columns. That's a two by three. The second matrix is a three row one column matrix. These inner two dimensions have to match which they do. That means is a resulting matrix will be dimension the outer dimensions. Okay, So we're gonna have to buy one. Matrix is our answer just two spots here. Okay, we'll fill in the first spot. This is gonna be row one. Column one. Okay, so everything in row one thinks everything in column one negative one times six plus zero times negative four plus seven. Thanks one. Okay, this should give us negative six plus zero plus seven. That should give us a one in that first little spot right there. Okay, The second guy this is gonna be row two column one. Okay, so we're gonna take everything in row two times that same column right there. So three times six less negative five that was negative for plus two times one spent 18 plus 20 plus two should give us 40. Okay? So one in the first row, 40 in the second round, and that is the result of this modification.

Yeah. Hello. So in our given function um the Y value of negative three corresponds to two 2, 2 different x values um namely here negative three corresponds the X values of one and and four. So therefore it is not a 1-1 function Right? It's not 1-1. And since the function is not 1-1, it does not have mm have an inverse.

This video's gonna go through the answer to question number 11 from chapter 9.3. So ask to use real reduction to find the inverse off the matrix. That 11 one 121 Thio three. So So we conform the combination matrix with the identity and they tried refugees. Okay, so if we subtract to you off the top equation from the bomb equation, then we're gonna get zero one that to you, minus 20 Maybe it's gonna be minus 201 on the inside. And if we should bottle subtract one of the first question from the middle equation, that's gonna be zero That's gonna be one on that's going to zero months. Well, on zero on me, the top equation as it is, Savior zero. Okay, so now we get to be a stick in court because on left inside the bomb equation on the middle or after the bottom row of the majors in the middle of the matrix. All the same, which means that the ah, the row is off the matrix linearly dependence, which by their a born in the book, means that er the identity that's all right with me

And the destiny of scientific calculator will start with just typing the base six and then to raise it to an exponents, we're gonna click on A to the B. If we click on A to the second power, this will give us an exponent of to, but I don't want an exponent of two. I want an expert on Abate. So that specializes. We're gonna take the B type in eight. So six of the eighth power is 1,679,000, 616.


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