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Differentiably

In mathematics, the term 'differentiably' refers to a property of a function that can be differentiated; that is, a function is said to be differentiable at a point if it has a derivative at that point. This means that a function is locally linear around that point and can be used for approximations. The concept is central to calculus, as differentiability implies continuity, but not vice versa. When a function is differentiable on an interval, it exhibits well-behaved behavior that allows for the application of various analytical techniques and theorems.

Differentiably meaning with examples

  • In calculus, a function is said to be differentiably continuous if it can be differentiated at every point in its domain. This ensures that the graph of the function has no sharp corners or discontinuities, allowing for the smooth application of the derivative at any given point.
  • When working with optimization problems in economics, it is crucial that the utility functions are differentiably defined to apply techniques like the Marginal Rate of Substitution, which relies on the properties of derivatives to find optimal consumption bundles.
  • In physics, motion can be modeled using differentiably defined functions to describe position, velocity, and acceleration. This allows scientists to predict future states of a system and understand its behavior over time through differential equations.
  • For a function to be solvable using Newton's method, it must be differentiably defined. This iterative method requires an initial guess and the function's slope to converge on a more accurate approximation of the root.
  • Differentiably defined functions allow engineers to use tools such as gradient descent effectively. This optimization algorithm relies on the ability to calculate derivatives to minimize error functions in machine learning models.

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