Hence option b is correct.
What is logarithmic function?
A function of the form is a logarithmic function. "y equals the log of x, base b" or "y equals the log, base b, of x" is how it's written. x > 0 and b > 0, b 1 in both versions. y is not restricted in any way.
How to solve?
Given image shows different types of logarithmic functions used in proof , but [tex]log b^{x-y}[/tex] is not used
Hence option b is correct.
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