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2,4-Dichlorophenoxyacetic acid is an organic compound with the chemical formula Cl 2 C 6 H 3 OCH 2 CO 2 H.It is usually referred to by its ISO common name 2,4-D. [4] It is a systemic herbicide that kills most broadleaf weeds by causing uncontrolled growth, but most grasses such as cereals, lawn turf, and grassland are relatively unaffected.
2,4-Dichlorophenol (2,4-DCP) is a chlorinated derivative of phenol with the molecular formula Cl 2 C 6 H 3 OH. It is a white solid that is mildly acidic (pK a = 7.9). It is produced on a large scale as a precursor to the herbicide 2,4-dichlorophenoxyacetic acid (2,4-D).
A textbook in 22 chapters that provides a complete introduction to economics and is used in approximately 500 universities worldwide. This economics textbook was designed as the source material for taught courses in the first year of an undergraduate degree, although it has also been used in schools, and for advanced courses in public policy.
Following Richard Bellman's work on dynamic programming and the 1962 English translation of L. Pontryagin et al.'s earlier work, [71] optimal control theory was used more extensively in economics in addressing dynamic problems, especially as to economic growth equilibrium and stability of economic systems, [72] of which a textbook example is ...
Economics (/ ˌ ɛ k ə ˈ n ɒ m ɪ k s, ˌ iː k ə-/) [1] [2] is a social science that studies the production, distribution, and consumption of goods and services. [3] [4] Economics focuses on the behaviour and interactions of economic agents and how economies work.
His book A Treatise on Political Economy (1803) contained a brief passage, which later became orthodoxy in political economics until the Great Depression, now known as Say's law of markets. Say argued that there could never be a general deficiency of demand or a general glut of commodities in the whole economy .
Linear regression is the predominant empirical tool in economics. For example, it is used to predict consumption spending , [ 24 ] fixed investment spending, inventory investment , purchases of a country's exports , [ 25 ] spending on imports , [ 25 ] the demand to hold liquid assets , [ 26 ] labor demand , [ 27 ] and labor supply .
2,4-Dinitrotoluene (DNT) or dinitro is an organic compound with the formula C 7 H 6 N 2 O 4. This pale yellow crystalline solid is well known as a precursor to trinitrotoluene (TNT) but is mainly produced as a precursor to toluene diisocyanate .