The figure shows a basis B = {b1,b} for R2 and a vector v in R. b2 F b1 Custom basis B = {b1,b} a. Write the vector v as a linear combination of the vectors in the basis B. Enter a vector sum of the form 5 b1 + 6 b2. b. Find the B-coordinate vector for v. Enter your answer as a coordinate vector of the form . [v]B=