Find the values of y such that log2(11y-3)-log2(3)-2log2(​y) = 1

Find the values of y such that log2(11y-3)-log23-2log2y = 1

Power law: 2log2y = log2y2

Product law: log2(11y-3) - log23 - log2y2 =  log2(11y-3) - log2(3y2)

Quotient law:  log2(11y-3) - log2(3y2) =  log2(11y-3/3y2)

log2(11y-3/3y2) = 1

So, 11y-3/3y2 = 21 = 2

11y - 3 = 2(3y2) = 6y2

0 = 6y2-11y+3

0 = (3y-1)(2y-3)

y = 1/3 or y = 3/2

JP
Answered by Joe P. Maths tutor

16959 Views

See similar Maths A Level tutors

Related Maths A Level answers

All answers ▸

Differentiate 8x^4 + 2x^2 + 10


The line AB has equation 3x + 5y = 7. What is the gradient of AB?


Find the integers n such that 4^(n)-1 is prime.


A block of mass 5kg is at rest on a smooth horizontal table, and connected to blocks of 3kg and 4kg which are hanging by strings via pulleys on either end of the table. Find the acceleration of the system and the tension in each string.


We're here to help

contact us iconContact ustelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

MyTutor is part of the IXL family of brands:

© 2026 by IXL Learning