Assist with Answers and correct solutions

2 21. Orthogonal Decomposition Let U = span 15 19 09 19 (a) Find an orthogonal basis for U. (b) Find a basis for U-. (c) Let y = 4 Find the orthogonal decomposition of y with respect to U.6.2.4. Let V be an inner product space with orthonormal basis s = {v1,.... V,} and let Te c(V). Prove that the matrix of T with respect to f has jkth entry (T(vx), v;)