Exercise: Consider x = (3-2) fundamental (a) Find a matrix. YLt).

Write down the 3 x 3 matrix that rotates a 2D point by angle about a point p = (xp, yp).

Give an example of a 3 x 3 matrix A such that Nul(A) = {0}.

If A is an nxn invertible matrix, then Select one: -1 a. A= det(A)/adj(A) -1 b. A"= -1*det(A)/adj(A) -1 c. A"= -1*det(A)/adj(A)" -1 d. A = adj(A)/det(A)