dy Find for y = Vx-7 by using the definition and then rationalizing the numerator. For what values of x is the function differentiable? Explain. .... dy dx (Type an exact answer, using radicals as...

Extracted text: dy Find for y = Vx-7 by using the definition and then rationalizing the numerator. For what values of x is the function differentiable? Explain. .... dy dx (Type an exact answer, using radicals as needed.) For what values of x is the function differentiable? O A. The function is differentiable for all real numbers x>7 since the derivative and the function are both defined for those values. O B. The function is differentiable for all real numbers x<7 since="" the="" derivative="" and="" the="" function="" are="" both="" defined="" for="" those="" values.="" o="" c.="" the="" function="" is="" differentiable="" for="" all="" real="" numbers="" x27="" since="" the="" function="" is="" defined="" for="" those="" values.="" o="" d.="" the="" function="" is="" differentiable="" for="" all="" real="" numbers="" xs7="" since="" the="" function="" is="" defined="" for="" those="">