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The temperature of a liquid during an experiment can be modeled by the function  f(x)=3.8cos(πx20)+2.2 , where f(x) is the temperature in °C and x is the number of minutes into the experiment.

What is the lowest temperature the liquid reached during the experiment?

Round to the nearest tenth of a degree if needed.

Use 3.14 for π .

I think it is -1.6

 Jan 14, 2019

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