Question

If log a + log b = log(a+b) then a=?
1)b/b-1
2)b
3)1/b-1
4)b/b+1​

Answer 1

Answer:

3)1=b-1 I think it is true

Answer 2

Step-by-step explanation:

We know that

$log(a) + log(b) = log(a \times b)$

and given

$log(a) + log(b) = log(a + b)$

Now compare both

we get

$log(a \times b) = log(a + b) \\ a b = a + b \\ b = ab - a \\ b = a(b - 1) \\ a = \frac{b}{b - 1}$

Required Ans