单词	Directional Derivative
释义	Directional Derivative (1) is the rate at which the function changes at in the direction . Let be a Unit Vector in Cartesian Coordinates, so (2) then (3) The directional derivative is often written in the notation (4)
随便看	Euler Characteristic Euler Constant Euler Curvature Formula Euler Differential Equation Euler Equation Euler Formula Euler Four-Square Identity Euler Graph Eulerian Circuit Eulerian Cycle Eulerian Integral of the First Kind Eulerian Integral of the Second Kind Eulerian Number Eulerian Trail Euler Identity Euler Integral Euler-Jacobi Pseudoprime Euler-Lagrange Derivative Euler-Lagrange Differential Equation Euler L-Function Euler Line Euler-Lucas Pseudoprime Euler-Maclaurin Integration Formulas Euler-Mascheroni Constant Euler-Mascheroni Integrals

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