DifferentialD
 Usage
 \[DifferentialD]
Notes
• Alias:  dd. • Compound operator with built-in evaluation rules. •  can only be interpreted by default when it appears with  or other integral operators. •  f  x is by default interpreted as Integrate[f, x]. • \[DifferentialD] is also used in TraditionalForm to indicate total derivatives. • See Section 1.10.4, Section 1.10.4, Section 3.10.1, Section 3.10.3 and Section 3.10.4. • See also: \[PartialD] , \[CapitalDifferentialD] , \[Delta] .
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