
Microeconomics Formula Sheet & Key Theorems: The Complete DU Reference Guide
The ultimate cheat sheet for Intermediate Microeconomics I & II. Master Consumer Theory, Producer Theory, Market Structures, Game Theory, and Welfare Economics.
Core concepts unpacked with Indian examples, economics-forward, but written for anyone who reads a textbook and still feels lost.

The ultimate cheat sheet for Intermediate Microeconomics I & II. Master Consumer Theory, Producer Theory, Market Structures, Game Theory, and Welfare Economics.

Comprehensive 4,500-word masterclass on Introductory Econometrics and Ordinary Least Squares (OLS) for DU Economics students. Covers algebraic derivations of beta_0 and beta_1, Gauss-Markov BLUE proofs, R-squared variance decomposition, hypothesis testing (t and F-tests), and 3 fully worked numerical problems.

Comprehensive 4,000-word masterclass on the IS-LM model for DU Economics students. Covers algebraic derivations of IS and LM curves, general equilibrium, fiscal and monetary policy multipliers, crowding-out effect, liquidity trap, and 3 fully worked exam numericals.

Comprehensive 4,000-word masterclass on Oligopoly Models for DU Economics students. Covers Cournot quantity competition, Bertrand price competition, Stackelberg leader-follower equilibrium, and 3 step-by-step worked numerical problems.

Comprehensive 4,000-word masterclass on the Solow-Swan Neoclassical Growth Model for DU Economics students. Covers capital accumulation, steady state k*, Golden Rule level k*gold, technological progress, and 3 fully worked examination numericals.

Comprehensive 4,000-word masterclass on Consumer Theory for DU Economics students. Covers utility functions, indifference curve properties, MRS derivation, budget constraint geometry, Lagrangian optimization, and 3 fully worked numerical problems.

Comprehensive 4,000-word masterclass on Game Theory and Nash Equilibrium for DU Economics students. Covers dominant strategies, Prisoner's Dilemma, mixed strategies, Cournot duopoly, and 3 fully worked numerical problems.

Exhaustive 4,500-word masterclass on the Mundell-Fleming open economy macroeconomics model. Includes algebraic derivations of IS*, LM*, BP curves, Marshall-Lerner condition, and India's exchange rate policy.

Exhaustive 4,500-word mathematical masterclass on the Cobb-Douglas production function. Mathematical proofs of Euler's Theorem, constant/increasing returns to scale, marginal productivity, output elasticity, and expansion paths.

Master Fiscal Policy vs Monetary Policy for DU exams. IS-LM-BP Mundell-Fleming model, algebraic multiplier proofs, crowding-out mechanics, 2020-2026 RBI repo rate history, FRBM deficit targets, and 2 word-for-word 15-mark model answers.

Master GDP Deflator vs Consumer Price Index for DU macroeconomics. Paasche vs Laspeyres mathematical proofs, substitution bias derivations, 3 worked numerical calculations, MoSPI item weight breakdown, and WPI comparison.

Price, income, and cross elasticity of demand explained with Indian market data. Point/Arc calculus derivations, MR-P-Elasticity proofs, 4 worked numericals, Delhi Metro & petrol case studies, and DU exam answer steps.

Master MME I and MME II in DU Economics Honours. Module breakdowns, 5 fully worked 15-mark numerical solutions (Lagrangian, Bordered Hessian, Cramer's Rule, Eigenvalues, Consumer Surplus integrals), Sydsaeter & Hammond reading guide, and DSE past-paper marking rubrics.

Complete DU Sem 1 Unit 9 notes: Negative/positive externalities, Pigouvian taxes, Coase theorem, pure public goods, Samuelson condition & tragedy of the commons.

Master DU Sem 1 Unit 8: Derived demand for labor, VMPL vs MRPL, backward-bending labor supply, monopsony exploitation & Ricardian/modern economic rent.

Comprehensive DU Sem 1 Unit 7 notes: Chamberlin monopolistic competition, Excess Capacity Theorem, Sweezy Kinked Demand, Cournot Duopoly, Bertrand Paradox & Game Theory.

Complete DU Sem 1 Unit 6 notes: Monopoly equilibrium, MR-elasticity relation, absence of supply curve, Lerner Index, Deadweight Loss & 1st, 2nd, 3rd Degree Price Discrimination.

Master DU Sem 1 Unit 5: Perfect competition assumptions, firm vs industry equilibrium, shutdown point P < AVC, short/long-run supply curve derivation & social efficiency.

Detailed DU Sem 1 Unit 4 notes covering Law of Variable Proportions, Isoquants, MRTS, Returns to Scale, Euler's Theorem, Isocosts, Cost Minimization & LAC Envelope.

Complete DU Sem 1 Unit 3 notes on consumer preference axioms, utility functions (Cobb-Douglas, Leontief), budget constraint, MRS tangency, Hicksian/Slutsky decomposition & WARP.

Master DU Sem 1 Unit 2: Demand & supply laws, elasticity formulas (price, income, cross), market equilibrium, price controls (ceilings, floors), tax incidence & 8+ solved numericals.

Complete DU Semester 1 Unit 1 study notes covering scarcity, choice, opportunity cost, Production Possibility Frontier (PPF) derivations, MRT, Mankiw's 10 principles & solved numericals.

Comprehensive notes on Utility Theory: Cardinal vs Ordinal approaches, Law of Diminishing Marginal Utility, indifference curves, and demand curve derivation.

Learn about poverty and inequality in India: absolute vs relative poverty, Tendulkar and Rangarajan committees, MPI, and how to calculate the Gini coefficient.

Master the Keynesian Multiplier and Aggregate Demand with detailed notes, theory, and over 10 solved numerical problems for economics exams.

A comprehensive summary of all 12 Indian Five Year Plans, their objectives, the NITI Aayog transition, and key historical contexts for economics students.

Master the foreign exchange market, exchange rate determination, PPP theory, interest rate parity, and the evolution of India's forex policy and RBI intervention.

Comprehensive guide to demand and supply analysis, market equilibrium, shifts in curves, price ceilings, floors, taxation incidence, and 10+ solved numerical problems.