Foundations
8 lessonsStart with everyday finance vocabulary, then build fluent algebra, functions, exponentials and logs, sequences for cash-flow maths, and enough trigonometry to read complex numbers without panic. Desk jargon is introduced only after the words are defined.
- 01Finance Concepts for Maths
Includes: Why this matters · Assets vs Portfolios · What a Return Is (vs Price) · The Risk-Free Rate: "Safe Interest" · Volatility: How Bouncy Is It? · Bonds and Coupons · Options: A Right, Not an Obligation · Portfolio Weights vs Quantities · Basis Points · Summary
- 02Algebra & Equations
Includes: Why this matters · The Balance Principle · Linear Equations and Break-Even · Rearranging Formulas · Percentages, Points and Reverse Percentages · Simultaneous Equations · Inequalities · Absolute Value: Distance from a Target · Rebalancing Bands · Summary
- 03Powers, Roots & Polynomials
Includes: Why this matters · Powers: Repeated Multiplication · The Laws of Exponents · Zero and Negative Powers: Discounting · Roots: Undoing a Power · Fractional Powers and Implied Growth Rates · Annualising Volatility: the Square-Root-of-Time Rule · Scientific Notation and Orders of Magnitude · Polynomials: Sums of Powers · Expanding Brackets: Interest on Interest · Factorising: Finding the Roots · The Quadratic Formula · +2 more inside the lesson
- 04Functions & Notation
Includes: Why this matters · Functions: Input-Output Machines · Function Notation: Reading f(x) · Domain and Range · Graphs: Seeing a Function · Straight Lines: Slope and Intercept · Composition: Chaining Functions · Inverses: Running a Function Backwards · Piecewise Functions and Option Payoffs · Subscripts and Indices · Sigma Notation: Adding Up · Pi Notation: Multiplying Up · +2 more inside the lesson
- 05Exponentials & Logarithms
Includes: Why this matters · Exponential Growth: the Same Factor Every Step · Compounding More Often · Where e Comes From · The Exponential Function eˣ · Continuous Compounding · Logarithms: Undoing Powers · The Natural Logarithm · The Log Rules: Multiplying Becomes Adding · Doubling Time and the Rule of 72 · Log Returns · Why Log Returns Add Up Over Time · +2 more inside the lesson
- 06Sequences & Series
Includes: Why this matters · Sequences: Lists Made by a Rule · Arithmetic Sequences: Adding the Same Amount · Geometric Sequences: Multiplying by the Same Amount · Sigma Notation and Partial Sums · Adding Up an Arithmetic Sequence · Adding Up a Geometric Sequence · The Price of an Annuity · The Price of a Bond · Infinite Sums and Convergence · Perpetuities: Payments That Never Stop · When a Sum Never Settles · +2 more inside the lesson
- 07Trigonometry Essentials
Includes: Why this matters · Right-Angled Triangles and Pythagoras · Sine, Cosine and Tangent · Radians: Measuring Angles by Arc Length · The Unit Circle: Angles of Any Size · The Pythagorean Identity · Polar Coordinates: Distance and Direction · From Circle to Wave · Amplitude, Period and Phase · Seasonality in Real Data · Adding Waves: a First Look at Fourier · The Angle Between Two Vectors · +2 more inside the lesson
- 08Complex Numbers & Euler's Formula
Includes: Why this matters · A Model That Might Cycle · A Number Whose Square Is −1 · Adding and Multiplying · The Complex Plane · Mirror Pairs: the Conjugate and Division · Size and Direction: Modulus and Argument · A Seasonal Cycle Is an Arrow · Multiplication Rotates and Stretches · Euler's Formula · Why Euler's Formula Is True (Optional on First Read) · Exponential Form and Powers: the Damped Cycle · +9 more inside the lesson