*forgot to mention in video, when plugging in the original 3 equations into the calculator, what you do is you press 2nd and then matrix. You go to edit and you plug in all the equations as you see it. Then press 2nd quit and go back to 2nd matrix. Go to MATH and scroll until you find rref(. You select that and go back to 2nd matrix. You then select A because it is the matrix that you have filled in earlier. Then add the parenthesis to close the problem. Click enter and the matrix should pop up. You should see the three 0's and it equals 1. The three 0's in row 3 confirm that our system is INCONSISTENT.
Thursday, November 14, 2013
SV #5 Unit J Concept 3-4 - Matrices
The student should make sure that they are paying attention to their multiplying and adding/subtracting. If they make a mistake in this then it could make it harder for the student to get the zeroes and stairstep 1's, making the process take longer. The student should pay close attention to when they are inputting in their numbers in the calculator, they should double check that they inputted the things correctly.
*forgot to mention in video, when plugging in the original 3 equations into the calculator, what you do is you press 2nd and then matrix. You go to edit and you plug in all the equations as you see it. Then press 2nd quit and go back to 2nd matrix. Go to MATH and scroll until you find rref(. You select that and go back to 2nd matrix. You then select A because it is the matrix that you have filled in earlier. Then add the parenthesis to close the problem. Click enter and the matrix should pop up. You should see the three 0's and it equals 1. The three 0's in row 3 confirm that our system is INCONSISTENT.
*forgot to mention in video, when plugging in the original 3 equations into the calculator, what you do is you press 2nd and then matrix. You go to edit and you plug in all the equations as you see it. Then press 2nd quit and go back to 2nd matrix. Go to MATH and scroll until you find rref(. You select that and go back to 2nd matrix. You then select A because it is the matrix that you have filled in earlier. Then add the parenthesis to close the problem. Click enter and the matrix should pop up. You should see the three 0's and it equals 1. The three 0's in row 3 confirm that our system is INCONSISTENT.
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