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What is the equation for a 3D line?

geometry 3d solid-geometry asked May 28, 2013 at 3:34

math.stackexchange.com

87 votes

Terence Tao–type books in other fields?

real-analysis abstract-algebra complex-analysis reference-request soft-question asked Jul 25, 2019 at 16:30

math.stackexchange.com

82 votes

How to treat differentials and infinitesimals?

calculus asked Jan 9, 2014 at 0:27

physics.stackexchange.com

67 votes

Have there been any updates on Mochizuki's proposed proof of the abc conjecture?

ag.algebraic-geometry nt.number-theory arithmetic-geometry abc-conjecture asked Feb 25, 2016 at 4:53

mathoverflow.net

43 votes

"Classroom" math?

soft-question problem-solving asked Mar 3, 2017 at 15:03

math.stackexchange.com

42 votes

In the past did Martin Shkreli offer free medication for those who could not afford it?

medications pharmaceutical asked Jul 19, 2018 at 7:08

skeptics.stackexchange.com

40 votes

How can I answer this Putnam question more rigorously?

calculus proof-writing contest-math asked Jul 28, 2016 at 17:57

math.stackexchange.com

37 votes

Why does Cersei need to repay the Iron Bank right now?

plot-explanation game-of-thrones asked Aug 10, 2017 at 15:23

movies.stackexchange.com

36 votes

Is diamond armor better than traditional armor?

science-based medieval medieval-europe materials armors asked Apr 22, 2016 at 15:59

worldbuilding.stackexchange.com

35 votes

Could we reach the earth's core using today's nuclear arsenal?

science-based reality-check earth geology nuclear asked Jul 4, 2016 at 16:26

worldbuilding.stackexchange.com

Top Answers

Prove that $\sqrt 2 + \sqrt 3$ is irrational

math.stackexchange.com

What is the equation for a 3D line?

math.stackexchange.com

Why can't you flatten a sphere?

math.stackexchange.com

The pigeonhole principle(?)

math.stackexchange.com

How to introduce my perpetual motion invention to the scientific community?

worldbuilding.stackexchange.com

How can I calculate the number of perfect cubes among the first $4000$ positive integers?

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Why is the Absolute value / modulus function used?

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Why ReLU function is not differentiable at 0?

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How to find the mod of this large number

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How is linear algebra used in research?

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Find coefficients of polynomial, knowing its roots are consecutive integers

math.stackexchange.com

What are the coordinates of red point?

math.stackexchange.com

What exactly is circular reasoning?

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Is it feasible to have a nomadic space civilization?

worldbuilding.stackexchange.com

Can a subsequence repeat a term finitely many times?

math.stackexchange.com

Is moving faster than light speed a paradox?

worldbuilding.stackexchange.com

Why does the Cauchy-Schwarz inequality hold in any inner product space?

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why $ 1 - \cos^2x = \sin^2x $?

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Logarithmic equation proof

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Question about the chain rule.

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The probability of scoring a 2 just once when a die is thrown three times?

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Non-trivial Polynomial Solution to $P(x)=(P'(x))^2, P(2)=0$?

math.stackexchange.com

Is $\sqrt{-(x^2)}$ discontinous on the reals?

math.stackexchange.com

Given any seven real numbers, prove that $0 \le \frac{x-y}{1+xy} \le \frac{1}{\sqrt3}$ holds for at least two?

math.stackexchange.com

How do I integrate $\int\dfrac{e^x - e^{-x}}{e^x + e^{-x}}\,dx$?

math.stackexchange.com

Finding Polynomial Equations for $1^4 + 2^4 + 3^4 + \ldots n^4$

math.stackexchange.com

My star will explode as a supernova. What can I do in order to ensure that my planet survives that?

worldbuilding.stackexchange.com

Convergence of $ \sum_{k=1}^{\infty} \frac {3^k}{5^k + 1}$

math.stackexchange.com

Give an example of a group G and elements a , b ∈ G such that a^{-1}(ba) ≠ b.

math.stackexchange.com

Adding $k^2$ to $1^2 + 2^2 + \cdots + (k - 1)^2$.

math.stackexchange.com