Mathematics

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Answer a question with score of 1 or more.
Awarded 75083 times.
Better form for integral$ \int_1^\infty 1/ (x \sqrt{x^2 - 1}) \exp(- a x)$
Awarded 1 hour ago
Applications of Riemann Series Theorem
Awarded 6 hours ago
Prove limit of n-th root
Awarded 8 hours ago
Subgroups of $(\mathbb R, +)$ are either dense or cyclic.
Awarded 9 hours ago
Diagonal matrix two-sided multiplication
Awarded 12 hours ago
What is integral of $\int \frac{x+1}{2x^2+3x-4} dx$?
Awarded 13 hours ago
what is the conditional probability that the card following it is the ace of spades?
Awarded 15 hours ago
$x$ and $y$ are two real numbers such that: $1 \leq x^2 + y^2 - xy \leq 2$ Show that: $\frac{2}{9} \leq x^4 + y^4 \leq 8$
Awarded 16 hours ago
When is the closure characterization of continuity ever really useful?
Awarded 22 hours ago
Integration Techniques: Using Integration by Parts After Substitution
Awarded 23 hours ago
How "big" is harmonic analysis?
Awarded yesterday
Showing $\int \limits_{a}^{x}f(t)(x-t)\,dt=\int \limits_{a}^{x}\left(\int \limits_{a}^{t}f(s)\,ds\right)dt$
Awarded yesterday
Can you explain to me why this proof by induction is not flawed? (Domain is graph theory, but that is secondary)
Awarded yesterday
MIT Statistic For Applications course Question 1
Awarded yesterday
Since AB = I = BA does this mean AB = BA?
Awarded yesterday
How to prove the statement: $\lim_{n\rightarrow\infty} z_n=0 \iff \lim_{n\rightarrow\infty}|z_n|=0$ for a sequence of complex numbers
Awarded yesterday
Problem with some specific indefinite integral solved with Wolfram Alpha online integrator
Awarded yesterday
How to get shape functions for three node 2d triangular element
Awarded yesterday
Is 1/3 included in the sequence 0.3, 0.33, 0.333,...?
Awarded yesterday
Can a regular grammar be ambiguous?
Awarded 2 days ago
Proving $\lim_{n \to \infty} \frac{n}{n+2} \sum_{k=1}^{n} \frac{k}{k+3} = \infty$
Awarded 2 days ago
(post deleted or otherwise unavailable)
Awarded 2 days ago
(post deleted or otherwise unavailable)
Awarded 2 days ago
algebraic fibre space induces algeraically closed extension of function fields
Awarded 2 days ago
Are sets with no limit points not compact?
Awarded 2 days ago
Prime divisors of numerators of partial sums of the harmonic series?
Awarded 2 days ago
Utilizing a three (or two) variable linear system of equations, how can I solve a word problem involving combinations of items?
Awarded 2 days ago
Concatenation of $f$-related vector fields/tangent vectors
Awarded 2 days ago
Probability that at least 1 student is taking a language class solution
Awarded Apr 13 at 18:04
How to simplify $\frac{\cos(x)+\sqrt{x}\sin (x)}{2 \sqrt{x} \cos^2(x)} $ into $\frac{\cos(x) +2 x \sin(x)}{2 \sqrt{x} \cos^2(x)}$?
Awarded Apr 13 at 16:56
Proving that the Calkin-Wilf tree enumerates the rationals.
Awarded Apr 13 at 15:07
Round off 0.998 to 2 sig fig
Awarded Apr 13 at 14:26
How to remember the difference between "stars and bars" and multinomial coefficients?
Awarded Apr 13 at 13:10
When does order 4 conjugate subgroups only intersect at {𝑒}?
Awarded Apr 13 at 11:37
What is the general formula for calculating dot and cross products in spherical coordinates?
Awarded Apr 13 at 5:25
(post deleted or otherwise unavailable)
Awarded Apr 13 at 3:08
What are the mean and standard deviation of the convolution of two bit vectors?
Awarded Apr 13 at 1:56
Question on Lagrange series inversion proof
Awarded Apr 13 at 0:28
Prove Localization in CRing is Epimorphism
Awarded Apr 12 at 21:51
Holding points are absorbing
Awarded Apr 12 at 20:36
Let $A$ be a random matrix with i.i.d entries, what can we say about $Ax$?
Awarded Apr 12 at 18:06
A very interesting problem that from equations to geometry
Awarded Apr 12 at 17:56
Upper bound of depressed quartic
Awarded Apr 12 at 14:19
Proof for $\frac{x}{a} = \frac{y}{b} = \frac{z}{c} = \frac{\sqrt{x^2 + y^2 + z^2}}{\sqrt{a^2 + b^2 + c^2}} $
Awarded Apr 12 at 14:19
The rotation symmetry group and the reflection group: Is there a name for what they have in common?
Awarded Apr 12 at 13:25
Is it possible to find sum of x^x from a to b without using summation but rather a less computationally heavy method?
Awarded Apr 12 at 7:50
Why is the affine function $f(x) = a^T x + b$ log-concave on $\{x | a^Tx + b \gt 0\}$?
Awarded Apr 12 at 5:00
(post deleted or otherwise unavailable)
Awarded Apr 11 at 22:41
Is it true that $\sin^2((2n+1) \pi x) \geq c$ occurs often (in precise sense)?
Awarded Apr 11 at 15:33
Cauchy Sequences bounded away from zero.
Awarded Apr 11 at 15:33
Embedding of a ring into a ring with unity
Awarded Apr 11 at 15:17
derive Lie derivative of volume form by using Cartan's magic formula
Awarded Apr 11 at 13:48
Certain Set of Functions with Bounded Variation is Compact
Awarded Apr 11 at 13:48
Prove the directional derivative is a linear map
Awarded Apr 11 at 13:48
(post deleted or otherwise unavailable)
Awarded Apr 11 at 13:16
How to calculate $\int(yy'' + (y')^2)\,dx$?
Awarded Apr 11 at 12:01
How do you find that: $x^3+4x^2+x-6=(x+2)(x^2+2x-3)$?
Awarded Apr 11 at 7:36
Verifying the divergence theorem for a given example
Awarded Apr 11 at 2:08
P(X_{t+1}} = k | X_t \neq k) in a Markov Chain.
Awarded Apr 11 at 2:03
Prove G has a vertex of a degree 1, if G is a connected graph with n > 1 vertices and n - 1 edges.
Awarded Apr 11 at 1:50
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