Question

Let A and E be matrices with the following sizes.A: 3 × 4      E: 4 × 3
If defined, determine the size of the matrix E − 2A.
(If an answer is undefined, enter UNDEFINED.)
×

If not defined, explain why.
E − 2A is defined.
E − 2A is not defined because E and 2A have different sizes.    
E − 2A is not defined because E and 2A have the same size.
E − 2A is not defined because the number of columns of E does not equal the number of rows of 2A.
E − 2A is not defined because the number of rows of E does not equal the number of columns of 2A.

[-13 Points] DETAILS LARLINALG8 2.1.035. Let A and E be matrices with the following sizes. A: 3 x 4 E: 4 x 3 If defined, determine the size of the matrix E - 24. (If an answer is undefined, enter UNDEFINED.) х If not defined, explain why. E-2A is defined. E-2A is not defined because E and 2A have different sizes. E-2A is not defined because E and 2A have the same size. E-2A is not defined because the number of columns of E does not equal the number of rows of 2A. E-2A is not defined because the number of rows of E does not equal the number of columns of 24. Need Help? Read It Talk to a Tutor Submit Answer [-/1 Points] DETAILS LARLINALG8 2.1.037.

Answer 1

We cannot perform E-2A then undefined  

Date Page No. 384 4 X3 Now! E-2A Recall: Addition and subtract of two defined iff both 'have matris in same order. E-2A Here is 4x3 size QA is 3X4 size E and LA both have 4X3 and 3x4 clearly order different order E-2A is NOT defined. E-ZA Undefined. Hence obtion (B)_locomrect answer, FC Scanned with CamScanner