Thread: Logarithms - help please!

Log3x – log3 (x-5) = log3 A
Express A in terms of x.
Hence, solve the equation
Log3 x – log3 (x-5) = 1

Thank you so much.

every single 3 is a base, it just didn't show up.

Originally Posted by kayteee92

Log3x – log3 (x-5) = log3 A
Express A in terms of x.
Hence, solve the equation
Log3 x – log3 (x-5) = 1

Thank you so much.

Recall that

So that,





Now what?

oh okay, so next i did

A = x/x-5

and i crossed multiplied to get x = A(x-5)

but for the next part of the problem, i replaced this for x and now i am stuck.

Your help is much appreciated!

Originally Posted by kayteee92

oh okay, so next i did

A = x/(x-5)

stop there. that is A in terms of x.

but for the next part of the problem, i replaced this for x and now i am stuck.

Your help is much appreciated!

for the second part, A = 1. so...?

thank you very much!