A power function is the function that is defined with equation consisting of one variable of a fixed power, where all the number and coefficients of the variables belong to real numbers.
Then, let f(x) be a function that defines the variable x;
say, f(x) = 4x³ + 5x² + 7x + 10.
For f(x) to be a power function; f(x) = xⁿ
Then f(x) is a power function with the highest power being 3 of the variable 'x'.
Linear and Quadratic equations are both power functions of power 1 and 2 respectively in the variable x.
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