Home/Differential Calculus/Notation/Formula6.1. NotationFormulaIn 6.1. NotationFormulaCopy LaTeXf′′(x)=d2fdx2,f(n)(x)=dnfdxnf''(x)=\frac{d^2f}{dx^2},\qquad f^{(n)}(x)=\frac{d^nf}{dx^n}f′′(x)=dx2d2f,f(n)(x)=dxndnfTagsDifferential calculusDerivativeNotationDerivative formulaVariablesxxxIndependent variablefffFunctionf′f'f′Derivative of ffff′′f''f′′Second derivative of fffnnnDerivative order or exponentdxdxdxDifferential of xxxConditionsf(n)(x)=dnfdxnf^{(n)}(x)=\frac{d^nf}{dx^n}f(n)(x)=dxndnfFound an error? Contact us.Related formulasRelatedFormuladdx[dydx]=d2ydx2\frac{d}{dx}\left[\frac{dy}{dx}\right]=\frac{d^2y}{dx^2}dxd[dxdy]=dx2d2yOpen formulaOpen in section