High-School Calculus & Matrix Help

I have a single high-school level math problem that mixes introductory Calculus ideas with basic matrix operations. I need a complete, clearly written solution that walks through every step, explains the reasoning in plain language, and finishes with the final numeric or algebraic answer... (Budget: $10 - $30 USD, Jobs: Calculus, Education & Tutoring, Educational Research, LaTeX, Mathematics, Matlab and Mathematica, PDF, Teaching/Lecturing)