-8 9 6. 1. Find BC + CB given that B= and C = If an operation is not defined; state th 9 7 - 5 - 6 Select the correct choice below and, if necessary, fill in the answer boxes to complete your choice. O A. BC + CB = (Simplify your answers.) B. This matrix operation is not possible because the orders of the two matrices being added a OC. This matrix operation is not possible because product BC is not defined. D. This matrix operation is not possible because product CB is not defined.

Enter the elements of a 3 * 3 matrix using the keyboard and then find the result of summing the elements of the next diagonal as shown in the figure below ?

encode 12. Maria has four-digit PIN(Personal Identification Number). She needs to send the PIN to her mother by email. Maria decides to the PIN and uses the process: Maria forms a 2 X 2 Matrix A from the digit of her PIN where: A = |1* digit |3d digit 2nd digit 4h digit She chooses then matrix B 20 6 and calculates AB. 3 6 She performs the encoded message by writing down the four elements of AB and following them with the number of digits of each element. 57|, the encoded message would be 125732942222. She then emailed the 32 94 encoded PIN to her mother. For example: if AB = 12 Find: a. AB, if the encoded message that Maria's mother receives is 4148189722232 ?

- 4 8 2 Find the following matrices where A = 8. and B = 6 - 5 9 - 1 - 9 - 1 а. А + B b. A-B с. - ЗА d. - 6A + 7B

Find AB.

Find the following matrix product, if it -9- 3 6. 6. 7 3 4

Compute each matrix sum or product if it is defined. If an expression is undefined, explain why. Let A = D= 25 -25 and E= 5 3 A + 2B, 2C-3E, DB, EB OA. A + 2B = -5 23 ²³] ·- 7 - - 2]---[-22] B = C = 4 Compute the matrix sum A + 2B. Select the correct choice below and, if necessary, fill in the answer box within your choice. (Simplify your answer.) OB. The expression A + 2B is undefined because B is not a square matrix. O C. The expression A + 2B is undefined because A and 2B have different sizes. O D. The expression A + 2B is undefined because A is not a square matrix. 2 0 -3 5 -5

Use the matrices 10 -14r -11 -15q 14z 12 2y and A = -4 B =D 7 -2 -10 11w 4 -9 to compute the indicated entries of C = A+B". Enter all answers in exact, reduced form. a. C21 = b. -a32+ b13 + C12 = OK Learn more Cookies help us deliver our services. By using our services, you agree to our use of cookies. 30°F Cloudy 近

Compute the sum of A = 85 63 and B = 2a 4b - 3c - 8d possible A+B= (Simplify your answer. Type an expression for each matrix element. Use integers or fractions for any numbers in the expression.) JA الله S Nex

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