Which of the following expressions are meaningful? Which are meaningless? Explain. (a) (a⋅b)⋅c The expression (a⋅b)⋅c has --- Select--- because it is the dot product of -- Select---. (b) (a⋅b)c The expression (a⋅b)c has --- Select--- because it is a scalar multiple of --- Select---. (c) |a|(b⋅c) The expression |a|(b⋅c) has --- Select--- ∨ because it is the product of --- Select---. (d) a⋅(b+c) The expression a⋅(b+c) has --- Select--- because it is the dot product of --- Select---. (e) a⋅b+c The expression a⋅b+c has --- Select--- because it is the sum of --- Select---. (f) |a|⋅(b+c) The expression |a|⋅(b+c) has --- Select--- because it is the dot product of --- Select---.
