Emrakul
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 Apr9 awarded Organizer Apr9 revised Is $\exp(x)$ the same as $e^x$? The question doesn't have much to do with calculus or derivatives - just notation Apr9 suggested approved edit on Is $\exp(x)$ the same as $e^x$? Mar27 suggested rejected edit on How is Euler fluids equation considered unsolved? Mar17 comment Probability of another 3 integers with same sum and product as the first 3 integers @Henry The title says "same sum and product", which is why I concluded that, though I agree it is mildly unclear. Mar17 comment Probability of another 3 integers with same sum and product as the first 3 integers @Henry Unfortunately not quite what the question is asking. It's asking for $xyz=x+y+z$. Mar14 awarded Yearling Mar4 comment How to tell where parentheses go in functional notation? @WChargin Physics has slightly different conventions than math for this. Usually, if parentheses are omitted in physics, you parenthesize all terms up until the $t$ term. Jan24 awarded Nice Answer Dec25 comment Easy example why complex numbers are cool I seem to recall a use of complex numbers in the book "One, Two, Three, Infinity" which fascinated me, but I don't quite recall it. It concerned a treasure map referencing a guillotine that had disintegrated, but using complex numbers worked regardless... Dec21 comment What are some mathematically productive ways to waste time? Can we please try to give more than one-line answers to this question? Dec19 awarded Constituent Dec10 awarded Caucus Oct19 comment How to show that five points in ℝ³ are cospherical? Why does this work? Oct17 comment Limit of a 0/0 function @Hans $g'$ can be zero if $f'$ is zero, because you just have another L'Hospital's case and take $f''/g''$ Otherwise, just compute the limit normally. Oct17 comment Development of the Idea of the Determinant Hello! I've noticed that your link to "Making Determinants Less Weird" has broken - do you know an alternate location this resource may be found? Oct16 comment How could we define the existence of an object/element in the Euclidean space? Which type of Euclidean space? Oct16 answered Limit of a 0/0 function Oct2 suggested rejected edit on Google Interview Question about a town where if a couple has a girl born, they can't have more children… Sep28 comment How to explain to a high school student why a linear differential equation is linear? @Nameless Come to San Diego! It's standard (at a few schools) here to teach through Calculus III and Linear Algebra by Senior year, and with growing frequency Junior year.