Abstract
Let \( \mathbb{R}^{\rm N} \to \mathbb{R} \). By the partial derivative of f with respect to its i th variable we mean the function
Remember that ei is the vector with 1 in the ith coordinate and 0 everywhere else.This is also denoted by the symbol \frac{{\partial (x)}} {{\partial x_i }} The domain of this function is, of course, the set of all x for which the limit exists. We recall from calculus that in terms of Computing a partial derivative from a given function, we simply regard all variables except the ith one as constants and apply standard differentiation rules.
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© 2002 Springer Science+Business Media New York
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Mikusiński, P., Taylor, M.D. (2002). Differentiation. In: An Introduction to Multivariable Analysis from Vector to Manifold. Birkhäuser, Boston, MA. https://doi.org/10.1007/978-1-4612-0073-4_3
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DOI: https://doi.org/10.1007/978-1-4612-0073-4_3
Publisher Name: Birkhäuser, Boston, MA
Print ISBN: 978-1-4612-6600-6
Online ISBN: 978-1-4612-0073-4
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