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Sub-topics: 15.1 E Discussion of inverse function. The functions y = logax and y = ax as inverse functio… (1) 15.2 E The inverse trigonometric functions. (1) 15.3 E The graphs of sin–1x, cos–1x, tan–1x. (2) 15.4 E Simple properties of the inverse trigonometric functions. (1) 15.5 E The derivatives of sin–1(x/a), cos–1(x/a), tan–1(x/a), and the corre… (1)