関連ワード:  derivative of square root of 2x    derivative of square root of 2x+1    derivative of square root of 2x using limit definition    derivative of square root of 2x 1 using limit definition    derivative of square root of 2x+3    derivative of square root of 2x 2    derivative of square root of 2x 5    derivative of square root of 2x+4    derivative of square root of 2x 9    derivative of square root of 2x+7