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Nice Answer

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apnorton

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earned this badge 25 times.

How do I know when to use nCr button and when to use nPr button on my calculator in which situation?

Awarded Nov 19, 2021 at 22:40

Nested Summation

Awarded Oct 16, 2021 at 1:41

De-Morgan's theorem for 3 variables?

Awarded Apr 22, 2020 at 23:17

Difference of mapsto and right arrow

Awarded Apr 4, 2020 at 18:35

Find the volume of the largest right circular cone that can be inscribed in a sphere of radius r?

Awarded Aug 15, 2017 at 3:10

When to do u-substitution and when to integrate by parts

Awarded May 8, 2017 at 7:46

Moving point along the vector

Awarded Apr 21, 2017 at 9:46

Evaluating the primitive $\int \frac{\mathrm dx}{e^{2x} + e^x + 1} $

Awarded Dec 24, 2014 at 10:15

Let $a=43120$ How many positive divisors does a have?

Awarded Dec 13, 2014 at 2:59

What was the first bit of mathematics that made you realize that math is beautiful? (For children's book)

Awarded Dec 12, 2014 at 1:56

Prove that $1 + 4 + 7 + · · · + 3n − 2 = \frac {n(3n − 1)}{2}$

Awarded Dec 4, 2014 at 10:33

Why do we still do symbolic math?

Awarded Jul 30, 2014 at 15:52

Interview riddle

Awarded Jul 15, 2014 at 13:43

Gap year to study math

Awarded Jul 4, 2014 at 17:31

Patterns of no formula.

Awarded Jun 11, 2014 at 18:15

Factorial of 1,e+80

Awarded Apr 30, 2014 at 5:46

Can the inverse of a function be the same as the original function?

Awarded Oct 28, 2013 at 9:58

Concepts of Modern Mathematics (Ian Stewart) - 751=7.107+2?

Awarded Sep 1, 2013 at 20:37

Can someone explain this trigonometric limit?

Awarded Aug 15, 2013 at 2:16

Why does one counterexample disprove a conjecture?

Awarded Jul 11, 2013 at 1:22

Is there any "superlogarithm" or something to solve $x^x$?

Awarded Jun 11, 2013 at 21:57

Boolean Algebra (Help Needed)

Awarded May 23, 2013 at 5:04

Is a function that has a vertical tangent line a function?

Awarded Mar 21, 2013 at 1:49

Finding circumference without using $\pi$

Awarded Jan 17, 2013 at 4:32

7 Drinks - 7 Flavors - Infinite variety?

Awarded Dec 10, 2012 at 12:52

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