Communication Look-Fors [ /4 marks]: Communication in all questions must include: (12 mark deduction per error) Enough steps shown to clearly demonstrate thinking Units used as required Solutions that are neat and easy to follow Fractions, not decimals, unless otherwise stated Proper use of mathematical symbols and notation, Radicals, not decimals, unless otherwise stated including correct vector notation Therefore statements where appropriate Equal signs aligned Fractions reduced to lowest terms . Side calculations clearly labeled if used . Neat, labelled, and clear vector diagrams drawn Variables and functions defined as required Proofs work from one side of the equation to the other Show all steps to earn full marks. No guess and check.3. Determine the value(s) of m, so that mi + 4/ - k is perpendicular to mi + mj + 12k. [T2]