Solve the simultaneous equations. a. xy = 81 b. 4 x = 2 y c. log 4
Question:
Solve the simultaneous equations.
a. xy = 81
b. 4x = 2y
c. log4 (x - y) = 2log4x
log4 (x + y + 9) =0
d. log10 x = 2log10 y
log10 (2x - 17y) = 2
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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
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Related Book For
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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