Where is my mistake in a logarithm?

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Prove that

$$3^{\log_2 5} = 5^{\log_2 3}$$

is true.

Here is my solution:

enter image description here

2

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4
On

The easiest way to do this is just to take $\log_2$ of both sides.


In the picture I see an expression which looks like $3^X=0$. But there isn't a real number $X$ for which this is true. You would need the expression to be equal to $1$ for the exponent to be zero.

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$$ 3^{\log(5)}=5^{\log(3)} \iff\log(3^{\log(5)})=\log(5^{\log(3)}) \iff \log(3)\log(5)=\log(3)\log(5)$$