First Order Ordinary Differential Equation A thermometer is taken from a room where a temperature is 20°C out where a temperature is 5 ° C. After  0,5 minutes the thermometer mark 15 ° C: a) Determine a temperature marked on the thermometer as a function of time; b) which will be the reading marked on the thermometer after 1 minute? c) How long will the thermometer read 10 °C?

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Chapter6: Exponential And Logarithmic Functions
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First Order Ordinary Differential Equation

A thermometer is taken from a room where a temperature is 20°C out where a temperature is 5 ° C. After  0,5 minutes the thermometer mark 15 ° C:

a) Determine a temperature marked on the thermometer as a function of time;

b) which will be the reading marked on the thermometer after 1 minute?

c) How long will the thermometer read 10 °C?

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