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nbubis

Age: 29

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30
What is the real life use of hyperbola?
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20
Show that $z^6 + 5z^4 - z^3 + 3z$ has at least two real roots given that all roots are distinct.
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15
Prove that $A+I$ is invertible if $A$ is nilpotent
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14
Why isn't math on the sine of angles the same as math on the angles in degrees?
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11
How is “area” a vector?
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10
How come $\int_{-\infty}^\infty \! e^{-|t|} \, \mathrm{d} t = 2\int_{0}^\infty \! e^{-|t|} \, \mathrm{d} t$?
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9
Finding $\int x^xdx$
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9
Using mathematics in theoretical physics
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9
$\lim_{a \to 0^{+}} \int_{0}^{a} \frac{1}{\sqrt{\cos(x)-\cos(a)}} \;dx=\frac{\pi}{\sqrt{2}}$
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9
About a harmonic series problem : How to prove that $\sum_{n=1}^{\infty}\frac{H_n}{n^3}=\frac{\pi^4}{72}$
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8
What does $ d\tan(x) = \sec^2(x)dx $ mean?
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7
What is your definition for neighborhood in topology?
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7
I need to prove that $f$ continuous at $(x)=0$ using a $\epsilon$-$\delta$ proof
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6
certain proofs of the irrationality of $\sqrt{2}$
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6
Why $\Delta(c^2)=2c(\Delta c) $?
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6
Convergence of the $\sum \frac{\ln(n!)}{n^{\alpha}}$
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5
Does $\tan(1/z)$ has a Laurent series convergent?
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5
how exactly did calculus change our understanding of the world?
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5
what is the equation to get this type of a curve?
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5
Finding the probability that a student is a random guesser
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5
Limit calculation
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5
Solving 4 unknown angles in quadrilateral possible?
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5
Are numbers with repeating patterns in their decimal expansion (e.g. $0.123123123\ldots$) rational?
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5
evaluate $\int_0^\infty \dfrac{dx}{1+x^4}$ using $\int_0^\infty \dfrac{u^{p-1}}{1+u} du$
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5
How does one create a title page in LyX?
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