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  • \nabla z = \frac{\partial z}{\partial x} \mathbf{i}+\frac{\partial z}{\partial y}\mathbf{j}. \nabla z=\left(\frac{\partial z}{\partial x{'}}\right)\mathbf{i}' = \left(\tan \xi \right)\mathbf{i}'\approx \left(\s
    114 KB (18,674 words) - 14:37, 6 June 2018
  • :[[Dictionary:Partial fraction/es]] :[[Dictionary:Penetration/es]]
    16 KB (1,816 words) - 10:13, 15 August 2020