Andrew Tomazos
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 Nov 8 comment Derivative of $x \over x+k$? For some embarassing reason I can't explain I thought that because the numerator and denominator shares the $a$ term the Quotient Rule didn't apply. Sorry. Nov 7 accepted Derivative of $x \over x+k$? Nov 7 asked Derivative of $x \over x+k$? Oct 28 accepted Generously Feasible? Oct 26 comment How is $dx \over dy$ different from $\partial x \over \partial y$? math.stackexchange.com/questions/221755/… Oct 26 revised Geometric Interpretation of Total Derivative? edited title Oct 26 asked Geometric Interpretation of Total Derivative? Oct 26 comment How is $dx \over dy$ different from $\partial x \over \partial y$? Now I am really confused. If we plot in 3D a surface $x=z_1z_2$, then at a given point on the surface the tangent in the $z_1$ direction will correspond to the partial derivative $\partial x \over \partial z_1$. Does the total derivative have a similiar geometric interpretation? Oct 26 comment How is $dx \over dy$ different from $\partial x \over \partial y$? But for all mechanical purposes all the same rules apply in both cases? We are asking how the "numerator" variable varies with respect to the "denomiator" variable, assuming everything else is held constant. Oct 26 revised How is $dx \over dy$ different from $\partial x \over \partial y$? edited title Oct 26 comment How is $dx \over dy$ different from $\partial x \over \partial y$? So what does $dx \over dz_1$ mean? Or is it undefined? If it is undefined why not just use the same notation? Oct 26 asked How is $dx \over dy$ different from $\partial x \over \partial y$? Oct 16 asked Any simplification of $\log_e{(1+e^x)}?$ Oct 15 answered Generously Feasible? Oct 15 comment Generously Feasible? Can you provide the link? It doesn't show in my search results? Oct 15 asked Generously Feasible? Sep 29 accepted Combinations of resistor networks? Sep 25 revised Combinations of resistor networks? added 97 characters in body Sep 25 asked Combinations of resistor networks? Sep 21 comment Counting Hexagons in Triangle Grid Recurrence? @BrianM.Scott: What was your technique?