Tangency Tutor: A No-Calculus Demand Solver for Microeconomics Courses

An interactive courseware widget that solves the classic utility-maximization problem for Cobb-Douglas and CES preferences using only algebra, walking students through every step from budget line to Marshallian demand — no Lagrange multipliers or calculus required. Instructors get randomized, auto-gradable problem sets because the answers are exact closed forms.