User Spook

10 votes

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If the derivative approaches zero then the limit exists

answered Mar 28, 2013 at 18:08

9 votes

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Show that an entire function $f$ s.t. $|f(z)|>1$ for $|z|>1$ is a polynomial

answered May 20, 2012 at 0:46

8 votes

Show y is odd in the equation $y^3 =x^2 +2$

answered May 17, 2013 at 10:27

5 votes

Factorial (Proof by Induction)

answered Jan 31, 2013 at 0:02

4 votes

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linear transformation and angles?

answered Dec 27, 2012 at 11:47

3 votes

Summation of $i \cdot j$ from $ 1$ to$ 3$

answered Jan 29, 2013 at 0:28

2 votes

How can we denote the following function in terms of big-O notation?

answered Feb 26, 2013 at 11:22

2 votes

How to prove $4\mid n$?

answered Jan 13, 2013 at 13:23

2 votes

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Is the ring $(\mathbb Z/n, +, \times)$ a subring of $(\mathbb Z, +, \times)$?

answered Nov 7, 2012 at 18:30

1 vote

If $G$ is abelian, then the set of all $g \in G$ such that $g = g^{-1}$ is a subgroup of $G$

answered May 19, 2012 at 0:30

1 vote

Prove that if $a\in [0,1]$, then $\lim\limits_{x \to a} f(x) =0$

answered May 19, 2012 at 23:51

1 vote

Prove that any finite subset of a linearly independent set is linearly independent

answered Jan 16, 2013 at 15:26

1 vote

Precedence of $\times$ and $\cup$.

answered Jan 21, 2013 at 16:52

0 votes

Inequality with exponents $x^x+y^y \ge x^y +y^x$

answered Jun 4, 2013 at 11:38

0 votes

Accepted

Differentiability on vector values function

answered Jan 21, 2013 at 15:45

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15 Answers

If the derivative approaches zero then the limit exists

Show that an entire function $f$ s.t. $|f(z)|>1$ for $|z|>1$ is a polynomial

Show y is odd in the equation $y^3 =x^2 +2$

Factorial (Proof by Induction)

linear transformation and angles?

Summation of $i \cdot j$ from $ 1$ to$ 3$

How can we denote the following function in terms of big-O notation?

How to prove $4\mid n$?

Is the ring $(\mathbb Z/n, +, \times)$ a subring of $(\mathbb Z, +, \times)$?

If $G$ is abelian, then the set of all $g \in G$ such that $g = g^{-1}$ is a subgroup of $G$

Prove that if $a\in [0,1]$, then $\lim\limits_{x \to a} f(x) =0$

Prove that any finite subset of a linearly independent set is linearly independent

Precedence of $\times$ and $\cup$.

Inequality with exponents $x^x+y^y \ge x^y +y^x$

Differentiability on vector values function