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	Inscribed Inscribed Angle Inside-Outside Theorem Insphere Instrument Function Insufficient Reason Principle Int Integer Integer Division Integer Factorization Integer-Matrix Form Integer Module Integer Part Integer Relation Integer Sequence Integrable Integral Integral Brick Integral Calculus Integral Cuboid Integral Current Integral Curvature Integral Domain Integral Drawing Integral Equation

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