Monday (July 11th) 1. Use the invertible matrix theorem to determine if each matrix is invertible. If it is, calculate its inverse. O (a) HOO 2 3 (b) ONNA CO ONNNA (Hint: there is an easier way than row reducing to check) 2 2 2. Let T : R2 - R2 by Show that T is invertible and find a formula for T-1. Wednesday (July 13th) 1. Show that the xy plane is a subspace of R3 by checking all three requirements