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Top Questions
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Top Answers
21
Convergence or not of infinite series: $\sum^{\infty}_{n=1}\frac{n}{1+n^2}$
math.stackexchange.com
18
General formula for nth element of the sequence 0, 1, 0, 1, ...
math.stackexchange.com
14
Can the product of three complex numbers ever be real?
math.stackexchange.com
12
Proof that the number of proofs is countably infinite
math.stackexchange.com
12
How can I prove this statement about subsets?
math.stackexchange.com
10
Find the value of $x$, for which the function $h(x) = \frac 1{(x-5)^2+4(x-5)+4}$ is undefined
math.stackexchange.com
9
Compute $\lim_{x\to 1}\frac{\ln x}{x^2-1}$ without using L'Hospital's Rule
math.stackexchange.com
7
If an integer $m$ is odd how can it be proven that its square would be odd?
math.stackexchange.com
7
Prove polynomial identity $x^k-1=(x-1)(x^{k-1}+x^{k-2}+\ldots+1).$
math.stackexchange.com
7
solve $\lim_{x\rightarrow -5} \frac{2x^2-50}{2x^2+3x-35}$
math.stackexchange.com
7
Prove that a convergent real sequence always has a smallest or a largest term
math.stackexchange.com
6
Is nᵐ>mⁿ if m>n?
math.stackexchange.com
6
Prove that the derivative of an even differentiable function is odd, and the derivative of an odd differentiable function is even.
math.stackexchange.com
6
For what values of $a$ will the lines $ay+3x=4$ and $2y+4x=3$ have no intersection points?
math.stackexchange.com
6
How can I prove that $\frac{e^x+e^y}{2}>e^\frac{x+y}{2}$, where $x \neq y$?
math.stackexchange.com
6
Find a sequence $\{a_n\}$ such that both $\sum {a_n}$ and $\sum{\frac{1}{n^2 a_n}}$ converge.
math.stackexchange.com
6
If $\{x_n\}$ is an increasing sequence and $\lim_{n\to\infty}x_n=L$, then $L$ is an upper bound of $\{x_n\}$
math.stackexchange.com
6
Limit of $f(x, y)$ at $(0, 0)$
math.stackexchange.com
6
Prove $\int_{0}^{1} \sqrt{x^n+1 }dx \geq \frac{2}{n+2}$ for any $n \in \mathbb{N}$
math.stackexchange.com
6
What is the time derivative of speed?
math.stackexchange.com
5
Show that $\lim_{h\to0} \frac{g(a+h)-2g(a)+g(a-h)}{h^2} = g''(a)$
math.stackexchange.com
5
Prove that $\lim_{x\to 1} x^3 = 1$ using epsilon-delta definition of limits.
math.stackexchange.com
5
Combinatorical proof of the identity $\binom{2n}{2} = 2\binom{n}{2}+n^2$
math.stackexchange.com
5
The maximum value of the two variables function given some constraints.
math.stackexchange.com
5
Minimum value of $\frac{b+1}{a+b-2}$
math.stackexchange.com
5
$f(x)=\int_2^x\frac{dt}{\sqrt{1+t^4}}$
math.stackexchange.com
5
$\lim_{n\to\infty} ((n+1)^x-n^x)$ for $x>0$
math.stackexchange.com