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

17136 Views

See similar Maths A Level tutors

Related Maths A Level answers

All answers ▸

How do you go about differentiating a^x functions?


Given that the binomial expansion of (1+kx)^n begins 1+8x+16x^2+... a) find k and n b) for what x is this expansion valid?


find dy/dx at t, where t=2, x=t^3+t and y=t^2+1


Given f(x)=2x^3 - 2x^2 + 8x, find f'(x) and f"(x).


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