The mass of a radioactive substance t years after first being observed is modelled by the equation

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The mass of a radioactive substance t years after first being observed is modelled by the equation m = 40e^−0.244t

a. Find the mass of the substance nine months after it was first observed.

b. Find dm/dt

c. With reference to the model, interpret the significance of the sign of the value of dm/dt found in part b.

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Pearson Edexcel A Level Mathematics Pure Mathematics Year 2

ISBN: 9781292183404

1st Edition

Authors: Greg Attwood, Jack Barraclough, Ian Bettison, David Goldberg, Alistair Macpherson, Joe Petran

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Question Posted: Aug 16, 2023 09:50 AM

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The mass of a radioactive substance t years after first being observed is modelled by the equation

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Pearson Edexcel A Level Mathematics Pure Mathematics Year 2

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