Complex variable derivatives
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Scalar field Derivative. Real vs Complex
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if a complex function $f$ is real-differentiable, then $f$ or $\overline{f}$ are complex-differentiable
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Defining functions as derivatives
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Applications of derivatives outside mathematics and physics
40960
Implicit Differentiation
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Derivative of Quadratic Form
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Quadratic Formula in Complex Variables
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Question about vector-matrix derivatives
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Showing that partial derivatives of $f(x) = \frac{xy}{x^2+y^2}$ exist for $(x,y) \neq (0,0)$
144092
How To quickly do derivatives with respect to matrices
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Derivative of $|x|^\alpha$
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Defining the derivative without limits
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Derivative of a linear transformation.
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Derivative of a determinant whose entries are functions
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How to show via induction the product rule for derivatives?
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Quick question on multivariate differentiation
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Complex differential equation