Finding the derivative of Ln (2-x) $(co)

Finding the derivative of Ln (2-x) $(co)

In order to find the derivative of Ln (2-x), let 2-x be t, then ln (2-x) can be transformed into LNT
Then, we take the derivative 1 / T and multiply it by the derivative of T,
The final answer is - 1 / (2-x)