関連ワード:  derivative of 1/square root of x    derivative of 1 square root of x    derivative of 1 square root of x using limit definition    derivative of 1 square root of x 2    derivative of 1 over square root of x    derivative of 1 divided by square root of x    derivative of 1 over 2 square root of x    how to find derivative of 1 square root of x    derivative of square root of 1 + x2    derivative of square root of 1 x 3