Marginal Efficiency of Capital (MEC), Accelerator theory.
The original text is in English. While some editions may have been translated, it is primarily an English-medium textbook.
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The book spans fundamental to advanced concepts, including national income accounting, theory of employment, consumption functions, investment functions, money, inflation, business cycles, and monetary/fiscal policy.
The and Keynesian Cross diagram appear in every exam. Redraw them from the PDF into a notebook. Jhingan’s labeling is very precise.
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