T-Mobile LTE 10% 11:09 p. m webwork.uprm.edu Variable\'S3\' is not defined in th

Question

T-Mobile LTE 10% 11:09 p. m webwork.uprm.edu Variable'S3' is not defined in this context S3 incorrect At least one of the answers above is NOT correct. (1 point) Find the set of solutions for the linear system -2x2 + 7x3 = 0 x2 + 3x3 = -5 Use s1, s2, etc. for the free variables if -( si (xl , X2,X3) S2 S3 Note: You can earn partial credit on this problem. Preview My Answers Submit Answers Your score was recorded You have attempted this problem 3 times. You received a score of 0% for this attempt. Your overall recorded score is 0% You have unlimited attempts remaining

Explanation / Answer

Our Augument matrix

Find the pivot in the 1st column in the 1st row

Find the pivot in the 2nd column in the 2nd row (inversing the sign in the whole row)

Eliminate the 2nd column

Make the pivot in the 3rd column by dividing the 3rd row by -2

Eliminate the 3rd column

Solution set:

(x1,x2,x3) = (14,-7,-4)

X1 X2 X3 b 1 1 -2 7 0 2 0 -1 3 -5 3 0 0 -2 8

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