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Jan
29
reviewed Leave Open How many non-negative integer solutions does the equation $3x + y + z = 24$ have?
Jan
29
reviewed Close Continuum Hypothesis in formalized language.
Jan
29
reviewed Close Monotonic bijection from positive reals to reals between 0 and 1
Jan
28
answered Solve $(1+x^{2}) \frac{\partial{u}}{\partial{x}} + y\frac{\partial{u}}{\partial{y}} = 0$
Jan
28
revised Solve $(1+x^{2}) \frac{\partial{u}}{\partial{x}} + y\frac{\partial{u}}{\partial{y}} = 0$
improved tex
Jan
28
comment Centre of mass of bounded region conformation of numerical answer
The object is of constant density and symmetric with respect to the $y$-axis, which intuitively justify the $y=0$ component. What would be the cause of it going to the right? Regarding the $z$ calculation, I did it both in euclidean and cylindrical coordinates, and ended up with the same result. Of course, I could be wrong. Why don't you post your calculations so we can compare?
Jan
28
reviewed Leave Open Solve $\log_{2\sqrt{2+\sqrt{3}}}(x^2+2x-2)=\log_{{2+\sqrt{3}}}(x^2+2x-3)$
Jan
28
reviewed Leave Open For which p is the Markov chain recurrent (almost random walk)
Jan
28
reviewed Close Noetherian property for exact sequence
Jan
28
reviewed Leave Open Questions on symmetric difference of events
Jan
28
reviewed Leave Open Finite groups as intersection of algebraic groups
Jan
28
reviewed Close General solution of recurrence relation
Jan
28
reviewed Close Demonstrate the existence of following limit using squeeze theorem
Jan
28
reviewed Leave Open Concept of Linearity
Jan
28
reviewed Close Partial Fractions Integration Help
Jan
28
reviewed Leave Open Finding $\lim_{x\to\infty}\frac{\sqrt{x+\sqrt{x+\sqrt{x}}}}{x}$
Jan
28
reviewed Close A Quadrilateral's area given four sides and a diagonal
Jan
28
reviewed Close Putnam: Show that $a(n)=b(n+2)$
Jan
28
reviewed Leave Open Implication and the equal sign?
Jan
28
reviewed Approve Orders of the elements in $\mathbb{Z}/8\mathbb{Z}$