Properties of the Transpose In Problems 39–42, either prove the properties in general using the fact that [ a, ]T = [a, ). or demonstrate the properties for general 3 × 3 matrices. 39. (A")T = A 40. (A + B)T = AT + BT 41. (kA) = kAT, for any scalar k 42. (AB)" = BTAT
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- . (a) What is the 2 × 2 matrix P that projects v = x y onto the x axis, i.e. takes x y to x 0 ? Is P invertible? (b) Let ` be the line from problem 2(b). Find the 2 × 2 matrix that projects v = x y onto ` by using a composition method similar to problem 2(b). Please solve both part , thank youWhat should k be for the matrix given in the question to be invertible?6. Suppose X + XB = C, where X, B, and C are square matrices of the same size. a. Derive an explicit formula for the matrix X. What matrix must be invertible in order for there to be a unique solution X? b. Use the formula to compute X when (view attatchment)
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- Write down what it means for a n x k matrix to be singular.ONLY PARTS C AND D!!!! Given A and B are 3x3 matrices with det A = -2 and det B = 3 compute the following and show what property you are using directly in your work c) d et AT d) det B-1Suppose A is invertible and you exchange its first two rows to reach B. Is the new matrix B invertible? How would you find B-1 from A-1?