Hey guys,

log(x+3) - logx = 1

so I got 1 = (x+3) / (x)

and the book says the answer is 1/3

I don't know how it got this :(

any help? Thanks

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- May 18th 2013, 03:48 PMCakeExponential and Logarithmic Equations
Hey guys,

log(x+3) - logx = 1

so I got 1 = (x+3) / (x)

and the book says the answer is 1/3

I don't know how it got this :(

any help? Thanks - May 18th 2013, 03:55 PMHallsofIvyRe: Exponential and Logarithmic Equations
Is that the common logarithm? Base 10? If so then you have and then "get rid of" the logarithm by taking 10 to the power of each side. Instead of getting you should have .

Can you solve ? - May 18th 2013, 04:01 PMPlatoRe: Exponential and Logarithmic Equations
- May 18th 2013, 04:06 PMCakeRe: Exponential and Logarithmic Equations
Correct, it is base 10. Ahh I see. So whenever I have " = 1 " and with a base of 10. It automatically equals to 10^1?

and yes, thank you. That gives me 1 / 3. Thanks a lot for clearing this up. I would have never gotten this.