ddxe1/x=\dfrac{d}{dx} e^{1/x} =dxde1/x=A1x2e1/x\dfrac{1}{x^2} e^{1/x}x21e1/xB−1x2e1/x-\dfrac{1}{x^2} e^{1/x}−x21e1/xcheck_circleC−e1/x/x-e^{1/x}/x−e1/x/xDe1/xe^{1/x}e1/xExplanatione1/x⋅(d/dx)(1/x)=e1/x⋅(−1/x2)e^{1/x} \cdot (d/dx)(1/x) = e^{1/x} \cdot (-1/x^2)e1/x⋅(d/dx)(1/x)=e1/x⋅(−1/x2).