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Show All Solutions Hide All Solutions a (beginalign*3x - 2y 14 x 3y 1endalign Show Solution.

For systems of two equations it is probably a little more complicated than the methods we looked at in augmented the first section.Well first write down the augmented matrix calculator and then get started with the row operations.Requirecolorleft beginarrayrrr colorRed 3 - 2 141 3 1endarray right.This doesnt always happen, but if it does that will matrix make our life easier.B (beginalign* - 2x y - 3 x - 4y - 2endalign Show Solution In this part matrix we wont put in as calculator much explanation for each step.This means that we need to change the red three into a zero.It decomposes matrix using, lU and Cholesky decomposition, the calculator will perform symbolic calculations whenever it is possible.From Row 3, we get.2.Row 2 indicates that.Math, and down arrow to ref(, and, enter, with ref( on the screen, return to the matrix menu to obtain.If matrix we add -3 times row 1 onto row 2 we can convert that 3 into.Requirecolorleft - 1endarray rightbeginarray*20cR_1 - 3R_2 to R_1 to endarrayleft variables - 1endarray right We have the augmented matrix in the required form and so were done.Requirecolorleft beginarrayrrrcolorRed - 2 1 - 31 - 4 - 2endarray rightbeginarray*20cR_1 leftrightarrow R_2 to endarrayleft beginarrayrrr1 - 4 - 2colorRed - 2 1 - 3endarray rightbeginarray*20cR_2 2R_1 to R_2 to endarrayleft beginarrayrrr1 - 4 - 20 colorRed - 7 - 7endarray right Before proceeding. Next, we need to monster discuss elementary row operations.

Examples 11,3,7,11*8,0,1,0,3,5 determinant(1,2,3,4,5,6,7,2,9) 1,2,3,4-1 1,2,3,4,5,6,7,2,9-1, matrix X: Thanks to: Philip Petrov ( t ) for Bulgarian translation, manuel Rial Costa for Galego translation.

This can easily be done with the third row operation.

So, using the third row operation we get, requirecolorleft beginarrayrrrr1 - times 2 1 30 1 - portable frac57 - 10 colorRed 3 - 5 - 3endarray portable rightbeginarray*20cR_3 - 3R_2 to R_3 to endarrayleft beginarrayrrrr1 - 2 1 30 1 - frac57 - 10 0 colorRed.

Here is that operation.As with the two equations case there really isnt any set path to take in getting the augmented matrix into this form.Be episode very careful with signs here.Before we get paid into the method we first need to get some definitions out of the way.Note that we could use the third row operation to get a 1 in that spot as follows.Requirecolorleft beginarrayrrrr colorRed 3 1 - 2 21 - 2 1 32 - 1 - 3 3endarray right As with the previous examples we will mark the number(s) that we want to change in a given step in red.Also, the path that one person times finds to be the easiest may not by the path that another person finds to be the easiest.

To convert it into the final form we will start in the upper left corner and work in a counter-clockwise direction until the first two columns appear as they should.

As with two equations we will first set up the augmented augmented matrix calculator with variables matrix and then use row operations to put it into the form, left right Once the augmented matrix is in this form the solution is (x p (y q) and (z r).