User Red Five - Mathematics Stack Exchange

25 votes

Minimum of $\frac{x^3}{x-6}$ for $x>6$ without using derivative?

answered Apr 20 at 4:31

18 votes

Accepted

Union of two events is at least as likely as the product of the events' probabilities

answered Mar 31 at 3:43

6 votes

Can a connected planar graph have 10 vertices and edges? is this possible?

answered Apr 22 at 3:11

5 votes

Accepted

Error with Cauchy Integral Formula

answered Apr 19 at 12:18

4 votes

Accepted

Two runners start on a track and run at different speeds. When will they next meet?

answered May 15 at 8:25

4 votes

A crew needs to divide oranges

answered May 23 at 7:26

4 votes

Prove or Disprove: Is there a connected planar graph with an odd number of faces where every vertex has a degree of 6?

answered Apr 22 at 4:12

4 votes

Expressing $\frac{2}{n}$ as the sum of two unit fractions

answered Apr 21 at 7:54

3 votes

Accepted

Question regarding piecewise definition of max function

answered Apr 5 at 2:47

3 votes

How exactly does Euler notation work for complex numbers?

answered Mar 30 at 8:05

3 votes

Accepted

Question regarding range of an exponential function

answered Apr 4 at 2:59

3 votes

Accepted

Simplification of square roots as denominators with limits

answered May 15 at 9:50

3 votes

Accepted

Showing $\cos^2{\left(\frac{\pi}{12}\right)}\left( 1+\frac{1}{4}\sin^2{\left( \frac{\pi}{8} \right)}\right)^2 > 1$ without a calculator

answered May 9 at 1:31

2 votes

Accepted

How to assign > and < signs after finding the roots of a quadratic inequality?

answered May 15 at 21:20

2 votes

Fraction word problem that dividing a whole into equal parts

answered May 13 at 7:59

2 votes

Finding value of unknown coefficient such that a linear system has a number of solutions

answered Jun 20 at 10:38

2 votes

Accepted

Is the number $(-2)^\frac{3}{5}$ is a complex number?

answered Apr 3 at 5:12

2 votes

Is this a Bernoulli experiment?

answered Apr 8 at 10:20

2 votes

Accepted

Conditional probability of independent events and its interpretation

answered Apr 9 at 7:06

2 votes

Why use limits to approximate derivatives

answered Apr 1 at 3:33

2 votes

Find the equation of a plane containing two given points and having a given distance to a third point

answered Mar 16 at 6:44

2 votes

Accepted

Proving an inequality: $\frac{(1+a^2)(1+b^2)(1+c^2)}{(1+a)(1+b)(1+c)} \ge \frac{1+abc}{2}$

answered Apr 7 at 11:49

2 votes

Accepted

Prove $p,q,r$ are AP if $p\left(\frac{1}{q}+ \frac{1}{r}\right), q\left(\frac{1}{r}+ \frac{1}{p}\right), r\left(\frac{1}{p}+ \frac{1}{q}\right)$ is AP

answered Apr 13 at 7:26

2 votes

Accepted

How to Determine Independence of Events Using Probability

answered Apr 15 at 10:38

2 votes

Repeatedly getting wrong answer solving exponential equation

answered Apr 30 at 4:10

2 votes

Method to find the longest and shortest distance on a circle from origin with less computation

answered Apr 30 at 21:51

1 vote

Can $1, -1, 1, -1, 1, -1, 1, -1, \dots$ be called a geometric sequence?

answered May 1 at 2:46

1 vote

Prove the slope of the tangent line of $a^x$ at $(0,1)$ is $\ln{a}$.

answered Apr 24 at 11:09

1 vote

Accepted

Trivial but Confusing question on basic probability

answered Apr 27 at 5:45

1 vote

Question regarding cuberoots of integral multiples of i

answered Apr 13 at 11:34

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97 Answers

Minimum of $\frac{x^3}{x-6}$ for $x>6$ without using derivative?

Union of two events is at least as likely as the product of the events' probabilities

Can a connected planar graph have 10 vertices and edges? is this possible?

Error with Cauchy Integral Formula

Two runners start on a track and run at different speeds. When will they next meet?

A crew needs to divide oranges

Prove or Disprove: Is there a connected planar graph with an odd number of faces where every vertex has a degree of 6?

Expressing $\frac{2}{n}$ as the sum of two unit fractions

Question regarding piecewise definition of max function

How exactly does Euler notation work for complex numbers?

Question regarding range of an exponential function

Simplification of square roots as denominators with limits

Showing $\cos^2{\left(\frac{\pi}{12}\right)}\left( 1+\frac{1}{4}\sin^2{\left( \frac{\pi}{8} \right)}\right)^2 > 1$ without a calculator

How to assign > and < signs after finding the roots of a quadratic inequality?

Fraction word problem that dividing a whole into equal parts

Finding value of unknown coefficient such that a linear system has a number of solutions

Is the number $(-2)^\frac{3}{5}$ is a complex number?

Is this a Bernoulli experiment?

Conditional probability of independent events and its interpretation

Why use limits to approximate derivatives

Find the equation of a plane containing two given points and having a given distance to a third point

Proving an inequality: $\frac{(1+a^2)(1+b^2)(1+c^2)}{(1+a)(1+b)(1+c)} \ge \frac{1+abc}{2}$

Prove $p,q,r$ are AP if $p\left(\frac{1}{q}+ \frac{1}{r}\right), q\left(\frac{1}{r}+ \frac{1}{p}\right), r\left(\frac{1}{p}+ \frac{1}{q}\right)$ is AP

How to Determine Independence of Events Using Probability

Repeatedly getting wrong answer solving exponential equation

Method to find the longest and shortest distance on a circle from origin with less computation

Can $1, -1, 1, -1, 1, -1, 1, -1, \dots$ be called a geometric sequence?

Prove the slope of the tangent line of $a^x$ at $(0,1)$ is $\ln{a}$.

Trivial but Confusing question on basic probability

Question regarding cuberoots of integral multiples of i