Need help with these questions

Consider the function f(x) = V2x + I a. Calculate f'(x) using its definition as a limit: b. Write the linearization formula for f at a = 4 , and use it to approximate the value of f(5) = VII. and submitted the onConsider the curve defined by the equation y' + x\\3 + y = 1+x2 a. Verify that the point (2, 1) belongs to this curve, and find the implicit derivative dx at this point. b. Write the equation of the tangent line to the curve at that point