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- https://math.libretexts.org/Courses/Georgia_State_University_-_Perimeter_College/MATH_2215%3A_Calculus_III/14%3A_Functions_of_Multiple_Variables_and_Partial_Derivatives/Directional_Derivatives_and_the_GradientA function z=f(x,y) has two partial derivatives: ∂z/∂x and ∂z/∂y. These derivatives correspond to each of the independent variables and can be interpreted as instantaneous rates of change ...A function z=f(x,y) has two partial derivatives: ∂z/∂x and ∂z/∂y. These derivatives correspond to each of the independent variables and can be interpreted as instantaneous rates of change (that is, as slopes of a tangent line). Similarly, ∂z/∂y represents the slope of the tangent line parallel to the y-axis. Now we consider the possibility of a tangent line parallel to neither axis.
- https://math.libretexts.org/Courses/Mission_College/Math_4A%3A_Multivariable_Calculus_(Kravets)/03%3A_Functions_of_Several_Variables/3.07%3A_Directional_Derivatives_and_the_GradientA function z=f(x,y) has two partial derivatives: ∂z/∂x and ∂z/∂y. These derivatives correspond to each of the independent variables and can be interpreted as instantaneous rates of change ...A function z=f(x,y) has two partial derivatives: ∂z/∂x and ∂z/∂y. These derivatives correspond to each of the independent variables and can be interpreted as instantaneous rates of change (that is, as slopes of a tangent line). Similarly, ∂z/∂y represents the slope of the tangent line parallel to the y-axis. Now we consider the possibility of a tangent line parallel to neither axis.
- https://math.libretexts.org/Courses/Mission_College/Math_4A%3A_Multivariable_Calculus_v2_(Reed)/14%3A_Differentiation_of_Functions_of_Several_Variables/14.06%3A_Directional_Derivatives_and_the_GradientA function z=f(x,y) has two partial derivatives: ∂z/∂x and ∂z/∂y. These derivatives correspond to each of the independent variables and can be interpreted as instantaneous rates of change ...A function z=f(x,y) has two partial derivatives: ∂z/∂x and ∂z/∂y. These derivatives correspond to each of the independent variables and can be interpreted as instantaneous rates of change (that is, as slopes of a tangent line). Similarly, ∂z/∂y represents the slope of the tangent line parallel to the y-axis. Now we consider the possibility of a tangent line parallel to neither axis.
- https://math.libretexts.org/Bookshelves/Calculus/Supplemental_Modules_(Calculus)/Vector_Calculus/1%3A_Vector_Basics/2%3A_The_GradientSuppose you are given a topographical map and want to see how steep it is from a point that is neither due West or due North. Recall that the slopes due north and due west are the two partial derivati...Suppose you are given a topographical map and want to see how steep it is from a point that is neither due West or due North. Recall that the slopes due north and due west are the two partial derivatives. The slopes in other directions will be called the directional derivatives.
- https://math.libretexts.org/Bookshelves/Calculus/Calculus_(Guichard)/14%3A_Partial_Differentiation/14.05%3A_Directional_DerivativesThe directional derivative of a multivariate differentiable function along a given vector v at a given point x intuitively represents the instantaneous rate of change of the function, moving through x...The directional derivative of a multivariate differentiable function along a given vector v at a given point x intuitively represents the instantaneous rate of change of the function, moving through x with a velocity specified by v. It therefore generalizes the notion of a partial derivative, in which the rate of change is taken along one of the curvilinear coordinate curves, all other coordinates being constant.
- https://math.libretexts.org/Bookshelves/Calculus/Calculus_(OpenStax)/14%3A_Differentiation_of_Functions_of_Several_Variables/14.06%3A_Directional_Derivatives_and_the_GradientA function z=f(x,y) has two partial derivatives: ∂z/∂x and ∂z/∂y. These derivatives correspond to each of the independent variables and can be interpreted as instantaneous rates of change ...A function z=f(x,y) has two partial derivatives: ∂z/∂x and ∂z/∂y. These derivatives correspond to each of the independent variables and can be interpreted as instantaneous rates of change (that is, as slopes of a tangent line). Similarly, ∂z/∂y represents the slope of the tangent line parallel to the y-axis. Now we consider the possibility of a tangent line parallel to neither axis.
- https://math.libretexts.org/Courses/Lake_Tahoe_Community_College/Interactive_Calculus_Q3/05%3A_Differentiation_of_Functions_of_Several_Variables/5.07%3A_Directional_Derivatives_and_the_GradientA function z=f(x,y) has two partial derivatives: ∂z/∂x and ∂z/∂y. These derivatives correspond to each of the independent variables and can be interpreted as instantaneous rates of change ...A function z=f(x,y) has two partial derivatives: ∂z/∂x and ∂z/∂y. These derivatives correspond to each of the independent variables and can be interpreted as instantaneous rates of change (that is, as slopes of a tangent line). Similarly, ∂z/∂y represents the slope of the tangent line parallel to the y-axis. Now we consider the possibility of a tangent line parallel to neither axis.
- https://math.libretexts.org/Courses/Coastline_College/Math_C280%3A_Calculus_III_(Everett)/03%3A_Functions_of_Multiple_Variables_and_Partial_Derivatives/3.07%3A_Directional_Derivatives_and_the_GradientA function z=f(x,y) has two partial derivatives: ∂z/∂x and ∂z/∂y. These derivatives correspond to each of the independent variables and can be interpreted as instantaneous rates of change ...A function z=f(x,y) has two partial derivatives: ∂z/∂x and ∂z/∂y. These derivatives correspond to each of the independent variables and can be interpreted as instantaneous rates of change (that is, as slopes of a tangent line). Similarly, ∂z/∂y represents the slope of the tangent line parallel to the y-axis. Now we consider the possibility of a tangent line parallel to neither axis.
- https://math.libretexts.org/Courses/Oxnard_College/Multivariable_Calculus/02%3A_Functions_of_Multiple_Variables_and_Partial_Derivatives/2.07%3A_Directional_Derivatives_and_the_GradientA function z=f(x,y) has two partial derivatives: ∂z/∂x and ∂z/∂y. These derivatives correspond to each of the independent variables and can be interpreted as instantaneous rates of change ...A function z=f(x,y) has two partial derivatives: ∂z/∂x and ∂z/∂y. These derivatives correspond to each of the independent variables and can be interpreted as instantaneous rates of change (that is, as slopes of a tangent line). Similarly, ∂z/∂y represents the slope of the tangent line parallel to the y-axis. Now we consider the possibility of a tangent line parallel to neither axis.
- https://math.libretexts.org/Courses/Misericordia_University/MTH_226%3A_Calculus_III/Chapter_14%3A_Functions_of_Multiple_Variables_and_Partial_Derivatives/3.12%3A_Directional_Derivatives_and_the_GradientA function z=f(x,y) has two partial derivatives: ∂z/∂x and ∂z/∂y. These derivatives correspond to each of the independent variables and can be interpreted as instantaneous rates of change ...A function z=f(x,y) has two partial derivatives: ∂z/∂x and ∂z/∂y. These derivatives correspond to each of the independent variables and can be interpreted as instantaneous rates of change (that is, as slopes of a tangent line). Similarly, ∂z/∂y represents the slope of the tangent line parallel to the y-axis. Now we consider the possibility of a tangent line parallel to neither axis.
- https://math.libretexts.org/Under_Construction/Purgatory/MAT-004A_-_Multivariable_Calculus_(Reed)/03%3A_Functions_of_Several_Variables/3.07%3A_Directional_Derivatives_and_the_GradientA function z=f(x,y) has two partial derivatives: ∂z/∂x and ∂z/∂y. These derivatives correspond to each of the independent variables and can be interpreted as instantaneous rates of change ...A function z=f(x,y) has two partial derivatives: ∂z/∂x and ∂z/∂y. These derivatives correspond to each of the independent variables and can be interpreted as instantaneous rates of change (that is, as slopes of a tangent line). Similarly, ∂z/∂y represents the slope of the tangent line parallel to the y-axis. Now we consider the possibility of a tangent line parallel to neither axis.
