Christian Blatter
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 Jul22 revised Inequalities and rearrangements added 58 characters in body Jul22 comment Coordinate Systems Transformation(Rectangular to Cylindrical) The given answer makes no sense. Evaluating a function at a given point gives a value. Plugging $P=(10,-8,6)$ into $F$ gives $72a$. Jul22 comment Is the substitution of standard angles while proving the equality of trigonometric formulas allowed? This has nothing to do with trigonometric functions per se. You cannot prove the identity $(x+y)^2=x^2+x+y+y^2$ by plugging in $x=y=1$ and checking whether you get a true statement. Jul22 comment Calculus Apostol Exercise 1.11 number 6 I had missed the $00$ for a complex number $c$ is interpreted as "$\>c$ is real and $>0\>$". Jul22 comment Intuitive Explanation For Why Dependent Equations Contain No Added Information? Creating new equations using algebraic rules does not alter the solution set, but can "add information": Adding the two equations $4x+5y=13$, $3x-5y=15$ results in $7x=28$ and tells you that $x=4$, which you didn't know before. Jul22 answered Find the number of sets of $(a,b,c)$ for $\frac{1}{a}+\frac{1}{b}+\frac{1}{c}=\frac{29}{72}$ Jul21 comment Why doesnt this Combinatoric work two ways? Concerning the green flags the $X$ is just another $B$, apart from the end positions. See true blue anil's answer here: math.stackexchange.com/questions/1365698/… of which this question is for all practical purposes a duplicate. Jul21 comment Why doesnt this Combinatoric work two ways? With the second method you miss all arrangements containing $GXG$. Jul21 comment Calculate pentagon area based on lengths of all its sides @Ragnar: There is no planar pentagon with "inner angles" equal to $120^\circ$. Jul21 answered Is there is any analogue of mean value theorem for integral when the range is whole $R$? Jul21 answered An analytic function on the complex plane minus a discrete set of points Jul21 comment Formal definition of mesh. You should indicate more clearly what kind of meshes you have in mind. Is it this: en.wikipedia.org/wiki/Polygon_mesh ? Jul21 answered Inequalities and rearrangements Jul21 revised Stuck on this proof that $ord(f) = ord(g)$ added 337 characters in body Jul20 revised What is the main difference between a vector space and a field? added 273 characters in body Jul20 answered What is the main difference between a vector space and a field? Jul20 answered (Just for clarification) - Is a convex, piecewise continuous function f on an closed interval continuous?