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Worked problems, method notes and exam strategy from the people who teach the classes.
Arithmetic Progressions
See why the sum of an AP is n/2 times first plus last term, use both forms of the formula, find the number of terms from a sum, and recover the nth term from a formula for the sums.
Arithmetic Progressions
Derive the nth term formula of an AP and use it to find any term, decide whether a number is a term, build an AP from two terms, count from the end and solve savings and multiples problems.
Managerial Economics
The economic and non-economic factors that decide how fast a country develops: capital formation, natural resources, farm surplus, trade, human resources, technology and more.
Managerial Economics
The main features of an under-developed economy, from low per capita income and dependence on agriculture to low capital formation, poverty, dualism and poor infrastructure.
Arithmetic Progressions
Learn what an arithmetic progression is: first term, common difference, the general form a, a + d, a + 2d, finite and infinite APs, and a sure method to test whether any list of numbers is an AP.
Polynomials
Sixteen original Class 10 Polynomials questions with full solutions: counting zeroes from graphs, verifying zero-coefficient relationships, forming quadratics and cubic checks.
Managerial Economics
Economic growth is a rise in a country's output and income; development is a broader improvement in people's lives. What India's experience teaches about both.
Managerial Economics
How a firm's pricing changes with the market it sells in: perfect competition, monopolistic competition, monopoly, and the main oligopoly models.
Polynomials
Sum and product of the zeroes of a quadratic, forming a quadratic from its zeroes, and the three relationships for a cubic, each proved and checked with worked examples.
Polynomials
Learn what the zeroes of a polynomial mean on a graph: degree, linear, quadratic and cubic polynomials, and how to count zeroes from where the graph meets the x-axis.
Managerial Economics
How price and output are decided in an oligopoly: Sweezy's kinked demand curve and price rigidity, cartels and output quotas, and price leadership by a low-cost firm.
Managerial Economics
How firms in monopolistic competition set price and output: short-run profit or loss where MR = MC, and why entry drives long-run economic profit to zero.
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