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Date: 14-10-2019
3645
Date: 22-4-2019
1961
Date: 3-6-2019
1800
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The functional derivative is a generalization of the usual derivative that arises in the calculus of variations. In a functional derivative, instead of differentiating a function with respect to a variable, one differentiates a functional with respect to a function. The definition for the univariate case is
For example, the Euler-Lagrange differential equation is the result of functional differentiation of the Hamiltonian action (functional).
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دراسة تحدد أفضل 4 وجبات صحية.. وأخطرها
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العتبة العباسية تستعدّ لتكريم عددٍ من الطالبات المرتديات للعباءة الزينبية في جامعات كركوك
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