Análise Completa da Prova de Economia do TPS/CACD 2026 | Professor Rodrigo Armstrong

Professor Rodrigo Armstrong, from Armstrong CACD, analyzes the Economics section of the TPS 2026 exam question by question, detailing mathematical solutions, economic concepts, and strategies for judging the statements. This video is essential for those who will be filing appeals, are preparing for the second phase, or want to understand the new question pattern of the exam board. In this analysis, you will see: ✅ Questions 191-195: Cobb-Douglas Utility Function — Complete mathematical analysis with partial derivatives, marginal rate of substitution, utility maximization, and conceptual solution without needing to do all the calculations. Includes an explanation of why this question required advanced-level knowledge (typical of a master's/doctorate in Economics). ✅ Questions 196-200: IS-LM Model with Nominal Rigidity — System of advanced economic equations, analysis of nominal shocks vs. real variables, classical dichotomy, macroeconomic equilibrium, Tobin's Q, labor market, and monetary policy transmission. Discussion on the level of difficulty (advanced econometrics, unprecedented in the CACD). ✅ Questions 201-207: External Sector and Exchange Rate — External savings, current account balance, trade balance vs. current account, fixed exchange rate regime, real exchange rate, interest rate differential, country risk, uncovered interest rate parity, and exchange rate policy trade-offs. ✅ Questions 208-211: Brazilian Economy — PAEG (Government Economic Action Plan), centralizing tax reform, Goals Plan (priority sectors and criticisms), Economic Miracle (CIP - Interministerial Price Council), phases of the Real Plan (PAI - Immediate Action Program). ✅ Questions 212-215: Financial System and Digital Innovations — Digital payment methods, the role of the Central Bank in supervising digital financial institutions (fintechs), network externalities (Spotify/PIX effect), CBDC (Central Bank Digital Currency), and the impacts of DREX on financial intermediation. Highlights of the analysis: 🔴 Original questions of high mathematical complexity — Partial derivatives, Cobb-Douglas function, advanced econometrics (master's/doctoral level). The professor explains why this appeared and how to solve it conceptually without all the mathematics. 🔴 Free 23-page support material — Complete guide with detailed solutions to all questions, including step-by-step explanations of derivatives and conceptual explanations. Available on the professor's Telegram channel and by email ([email protected]). 🔴 Strategies for appeals — Identifying potential inconsistencies (e.g., question 198 on crowding out, which contradicts the initial statement) and points for well-founded rebuttal. 🔴 Preparation for the second phase — Topics that may be covered: network externalities, CBDC/DREX, dollar hegemony, Tobin's Q, uncovered interest rate parity expanded with country risk. Main concepts covered: Cobb-Douglas Utility Function and properties (multiplicity, substitutability, constant spending ratios) Marginal Rate of Substitution and partial derivatives Keynesian IS-LM model with nominal rigidity Non-neutrality of money in the short term Tobin's Q (market value vs. asset replacement cost) Crowding out (displacement effect of private investment) Classical vs. classical dichotomy Non-Keynesian dichotomy Current account balance and external savings Fixed exchange rate regime and exchange rate parity defense (Impossible Trinity) Network externalities in payment systems CBDC and impacts on financial intermediation Why watch this analysis: This was an atypical exam, with advanced econometrics questions never before seen in the CACD. Professor Rodrigo Armstrong, PhD from FGV, demystifies the complex mathematics and shows how to judge the statements conceptually, without needing to master differential calculus. "This is an advanced economics exam, master's/doctoral level. It has never appeared in the CACD. But it was possible to answer conceptually — and that's what I'm going to show you." Complete free material available. Second Phase Economics 2026 course with open enrollment (5 new simulations + 34 simulations from previous cycles). Subscribe to the channel to follow more exam analyses, study strategies and Economics content for the CACD. --- The Essay Simulations for the Second Phase are now open for the CACD 2026. → All subjects: History, Geography, Law, Economics, International Politics + languages → Individual correction by a teacher with video analysis per question → Submission deadline: April 19th | Correction delivered by April 24th (before the exam) → Payment in up to 18 installments via bank slip (through TMB) Even if you're not sure about passing the first phase — simulate now. Those who reach the second phase without a grade reference are in the dark. 🔗 Access the plans at the link below. https://www.linguagemdiplomatica.com....