Courses starts: 30 Sept 2025
The course will be delivered over ten weeks in Michaelmas Term 2025, with each week consisting of a one-hour lecture followed by a one-hour tutorial. Students will work through core topics drawn from the recommended textbook Mathematics for Economics and Business by Ian Jacques (9th edition), supported by regular practice problems and weekly quizzes.
Week 1: Review of Basic Mathematical Concepts
Topics: Fractions, powers, roots, order of operations, and manipulation of algebraic expressions.
Economic Application: Lays the foundation for interpreting and manipulating basic economic formulas, such as elasticity and index numbers.
Week 2: Linear and Quadratic Equations
Topics: Solving and graphing linear and quadratic equations, completing the square, discriminant analysis.
Economic Application: Used to model cost, revenue, and profit functions; helps identify break-even points and analyze market scenarios with non-linear dynamics.
Week 3: Simultaneous Equations
Topics: Solving linear systems using substitution, elimination, and matrix methods.
Economic Application: Core to solving supply-demand equilibrium, input-output models, and price-setting in competitive markets.
Week 4: Exponential and Logarithmic Functions
Topics: Properties, transformations, natural logarithms, and inverse functions.
Economic Application: Models compound interest, economic growth, inflation, and depreciation; key for understanding time value of money and utility functions.
Week 5: Introduction to Differentiation
Topics: First principles, rules of differentiation (product, quotient, chain), tangent lines, and rates of change.
Economic Application: Crucial for marginal analysis—examining marginal cost, marginal revenue, and optimizing firm behavior.
Week 6: Higher-Order Derivatives and Optimisation
Topics: Second and higher-order derivatives, concavity, inflection points, and local optimization.
Economic Application: Identifying profit-maximizing output levels and cost-minimizing input combinations using second derivative tests.
Week 7: Multivariable Functions and Partial Derivatives
Topics: Functions of several variables, partial derivatives, cross-partials, and gradient interpretation.
Economic Application: Applied to utility maximization, cost functions, production functions, and marginal rate of substitution.
Week 8: Unconstrained Optimisation
Topics: Critical points in multivariable functions, Hessian matrix, and second-order conditions.
Economic Application: Optimization of multivariable economic models such as firm output with multiple inputs or utility with multiple goods.
Week 9: Integration and Economic Applications
Topics: Indefinite and definite integrals, integration by substitution, area under curves.
Economic Application: Calculation of consumer and producer surplus, aggregate demand, and total cost/revenue functions.
Week 10: Matrix Algebra and Economic Modelling
Topics: Matrix operations, inverses, determinants, solving systems with matrices.
Economic Application: Matrix algebra is used in input-output models, which show how different industries depend on each other for inputs. A key example is the Leontief Model, which represents the flow of goods between sectors in an economy to help analyse the impact of changes in one sector on the others. It's widely used in national economic planning and forecasting.