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200
Why a quadratic polynomial has at most 2 roots (over a field or domain)?
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54
Finding out the area of a triangle if the coordinates of the three vertices are given
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45
What are some counter-intuitive results in mathematics that involve only finite objects?
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17
What other tricks and techniques can I use in integration?
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16
What are some conjectures of your own?
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15
Finding Rational Triples of Sum Zero and Product One.
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15
Proving $f:\Bbb R\rightarrow \Bbb R$ is onto where $f(x)=\frac{x^3}{x^2+1}$
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12
Why is a geometric progression called so?
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12
How to integrate functions with floor function ? Please explain me.
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12
Isolating $y$ in $\sin(xy)=\cos(xy)$
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11
What has this figure to do with the Pythagorean theorem?
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11
Linear Algebra Versus Functional Analysis
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10
There are no integer solution to $a^p+ p b^p+ (10p+1) c^p=0$ for any $p$ prime
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10
Simplifying $\frac{\sin102^\circ\sin24^\circ-\sin156^\circ\sin54^\circ}{\cos102^\circ\sin24^\circ-\cos156^\circ\sin54^\circ}$
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10
Why is this trigonometric identity true?
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9
Cardioid in coffee mug?
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9
How to find irrational numbers between rationals. (And is my method correct?)
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9
simplify $\sqrt[3]{5+2\sqrt{13}}+\sqrt[3]{5-2\sqrt{13}}$
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8
The derivation of the Weierstrass elliptic function
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8
How to use prove this $p^4\equiv p\pmod {13}$
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8
Are those two numbers transcendental?
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8
Fundamental unit of the quadratic integer ring $\mathbb{Z}[\sqrt{n}]$
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8
Find the value of $ab+ 2cb+\sqrt3 ac$?
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7
How many solutions to this Diophantine equation group of Com Quantum Theory? Does it have a general solution method?
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7
Calculate $\sum_\limits{k=1}^{100}\left \lfloor \sqrt{k}+\frac{1}{k} \right \rfloor$
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7
Proving Hahn-Banach theorem directly
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7
Norm of element $\alpha$ equal to absolute norm of principal ideal $(\alpha)$
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7
Does the equation $x^2+23y^2=2z^2$ have integer solutions?
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7
Are $\frac{\pi}{e}$ or $\frac{e}{\pi}$ irrational?
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7
Can a pre-calculus student prove this?
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