関連ワード:  derivative of sqrt x 2 2x    derivative of sqrt x 2 2x 1    derivative of square root of (x^2+2x+1)    derivative of 2x sqrt x^2+7    derivative of 2x sqrt 25 x 2    derivative of sqrt(2x)    derivative of square root of 2x    derivative of 2x squared    derivative of √2x