Which of the following is a logarithmic function? a. y=0.25x b. y=x^0.25 c. y=log25^x d. y=(0.25)^x

The correct option is C .

Step-by-step explanation:

A logarithm function is written in the form of  ,

Since, y = 0.25x is the type of function y = mx + c,

Which is the general form of a linear function,

⇒ y = 0.25x is not a logarithm function,

is the type of function , where k and a are any real number,

Which is the general form of a power function,

⇒ is not a logarithmic function.

is the type of function

Which is the general form of exponential function,

⇒ is not a logarithmic function,

Hence, only the function in option C has written in the form of .

Option C is correct.

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