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Jun
7
comment For which values of $a$ does $||x^2-16|-7|-2a=0$ have 3 roots?
@VaheMuradyan dzer bari galust akhper
Jun
7
revised For which values of $a$ does $||x^2-16|-7|-2a=0$ have 3 roots?
added 168 characters in body
Jun
7
revised For which values of $a$ does $||x^2-16|-7|-2a=0$ have 3 roots?
added 3 characters in body
Jun
7
revised For which values of $a$ does $||x^2-16|-7|-2a=0$ have 3 roots?
added 3 characters in body
Jun
7
answered For which values of $a$ does $||x^2-16|-7|-2a=0$ have 3 roots?
Jun
7
comment A triangle in the Poincare disc model
With similar method, you can show that if the internal angles of a hyperbolic polygon are all equal then the lengths of the sides are all equal. (This is not true in Euclidean geometry: a rectangle has right-angles for all of its internal angles, but the sides are not all of the same length.
Jun
6
comment what is the way to reach apropriate answer about my question about group in algebra
A good way to start is $g^dg^dh^dh^d=g^dh^dg^dh^d=h^dh^dg^dh^d=h^dh^dg^dg^d$.
Jun
6
answered what is the way to reach apropriate answer about my question about group in algebra
Jun
6
reviewed Approve Show $\phi^{-1}(K)=\{g\in G\mid \phi(g)\in K\}$ forms a subgroup of $G$
Jun
6
comment A triangle in the Poincare disc model
@willemien thanks for editing.
Jun
6
revised A triangle in the Poincare disc model
deleted 13 characters in body
Jun
6
revised A triangle in the Poincare disc model
edited tags
Jun
6
answered A triangle in the Poincare disc model
May
24
reviewed Approve relation of annihilators on exact sequence
May
12
awarded  Yearling
Apr
8
awarded  Enlightened
Apr
8
awarded  Nice Answer
Jan
20
awarded  Notable Question
Jan
12
reviewed Approve Second Order Differential Equation inhomogeneous
Jan
12
reviewed Approve limits of function without using L'Hopital's Rule $\mathop {\lim }\limits_{x \to 1} \frac{{x - 1 - \ln x}}{{x\ln x+ 1 - x}} = 1$