Answers>Maths>A Level>Article

log3 (9y + b) – log3 (2y – b) = 2, Find y in terms of b.

Use laws of logarithms to simplify.Log₃((9y+b)/(2y-b)) = 2(9y+b)/(2y-b) = 3²(9y+b) = 9(2y-b)9y+b = 18y-9bCollect terms.9y = 10by = 10b/9

RA

Answered by Roy A. • Maths tutor

9479 Views

See similar Maths A Level tutors

Related Maths A Level answers

All answers ▸

The curve C has equation 2x^2y+2x+4y-cos(pi*y)=17 A) Use implict differenciation to find dy/dx B) point P(3,0.5) lies on C, find the x coodinate of the point A at which the normal to C at P meets the x axis.

Find the derivative of the function y = (2x + 12)/(1-x)

x^2 + y^2 + 10x + 2y - 4xy = 10. Find dy/dx in terms of x and y, fully simplifying your answer.

Given that y=4x^3-(5/x^2) what is dy/dx in it's simplest form?