Solve the simultaneous equations a xy 81 b 4 x 2 y c log 4 (x y) 2log 4 x log 4 (x y 9) 0 d log 10 x 2log 10 y log 10 (2x 17y) 2 ...

a xy 81 b 4x 2y From equation b we have y 2x Substituting y in equation a we get x2x 81 2x2 81 x2 81 ...

Solve the simultaneous equations. a. xy = 81 b. 4 x = 2 y c. log 4

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Solve the simultaneous equations.
a. xy = 81

b. 4^x = 2^y

c. log₄ (x - y) = 2log₄x

log₄ (x + y + 9) =0

d. log₁₀x = 2log₁₀y

log₁₀ (2x - 17y) = 2

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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 13, 2023 02:49 AM

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Solve the simultaneous equations. a. xy = 81 b. 4 x = 2 y c. log 4

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a xy 81 b 4x 2y From equation b we have y 2x Substituting y in equation a we get x2x 81 2x2 81 x2 81...View the full answer

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

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