http://www.math.ualberta.ca/~xichen/...05w/hw2sol.pdf
can someone tell me why in solution to #9, we can choose the scalars alpha and beta to be such that alpha + beta =1 ?
http://www.math.ualberta.ca/~xichen/...05w/hw2sol.pdf
can someone tell me why in solution to #9, we can choose the scalars alpha and beta to be such that alpha + beta =1 ?