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The equation below is a polynomial of order 4, fitted to the data recorded in a...

The equation below is a polynomial of order 4, fitted to the data recorded in a creep test conducted on a particular type of steel, for an elapsed time between 10 to 20 hours. The data were recorded for % strain versus elapsed time in hours. Can you differentiate the following equation to get a creep strain

t=12

E=4.5x10^-5 t^4 - 0.0024t^3 + 0.0487t^2 -0.3428t +1.4532

Use this equation to calculate the creep strain rate at 12 hours elapsed time. Give your answer to 1 significant figure. (5 marks)

Can you differntiate the above equation .

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