Question

Which of the following is equivalent to y = log, x? (1) y=x? (3) x = 79 (2) x=y? (4) y=x!

Answer 1

Let's employ the first identity in logarithms.

`\begin{gathered} \text{If a}^x=b \\ \text{then, x=}\log _ab \end{gathered}`

Thus,

`\begin{gathered} \text{If y=}\log _7x \\ \end{gathered}`

Then;

`x=7^y`

Thus the answer is option (3)