Given the power function y = f (x) image over-current (2, √ 2), find the analytic expression of this function

Given the power function y = f (x) image over-current (2, √ 2), find the analytic expression of this function

Let the analytic formula of the power function be y = x ^ α, and substitute the point (2, √ 2) to get:
√2= 2^α,α=1/2.
So the analytic expression of the function is y = x ^ (1 / 2), that is y = √ X