Given that 3e x + 8e x = 14, find the possible values of ex and hence

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Given that 3e^x + 8e^−x= 14, find the possible values of ex and hence solve the equation 3^ex + 8e^−x = 14 correct to 3 significant figures.

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Cambridge International AS & A Level Mathematics Pure Mathematics 2 & 3 Coursebook

ISBN: 9781108407199

1st Edition

Authors: Sue Pemberton, Julianne Hughes, Julian Gilbey

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Question Posted: Mar 14, 2023 07:17 AM

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Given that 3e x + 8e x = 14, find the possible values of ex and hence

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Lets first substitute y ex and rewrite the equation in terms of y 3y2 8 14y Then we can r...View the full answer

Cambridge International AS & A Level Mathematics Pure Mathematics 2 & 3 Coursebook

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