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Answer to Question #44090 in Trigonometry for raphael

Question #44090
what is the range of the function f(x)=2^x-3?
Expert's answer
The range of the function f(x)=2x2-3 is [-3;+infinity), i.e. f(x) is greater than or equal to (-3), because 2x2 is non-negative. 

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