Roberto Abraham Scaruffi

How do I solve ? Viktor Toth, IT pro, part-time physicist 46 votes Let us rewrite your equation. First, convert it into exponential form: ... Read More »

What is the best way to learn mathematical proofs? Alaka Halder, Student at Princeton University 23 votes Cal Newport has a helpful guide on learning mathematical proofs. On his blog, he talks about his experiences with a proof-based undergraduate class in discrete math (Case S... Read More »

What is the largest non-integer that naturally occurs in mathematics? Anders Kaseorg, MIT PhD student in CS; Cofounder of K... 121 votes Ramanujan’s constant    is notable for being absurdly close to the large integer . This isn’t a coincidence; there’s a deep explanation beginning with the observation that ... Read More »

What do entry-level investment bankers actually do? Erin Parker, Entrepreneur. Gets shit done. Kicks ass. 382 votes I can tell you what an entry-level banker in a bulge-bracket leveraged finance group does. For more check out my ibankinginternship.com site. 7:30am Get up, throw on a sui... Read More »

If , what is the value of  and ? David Joyce, always learning 62 votes Suppose you have five loaves of bread and you want to divide them evenly among seven people. You could cut the five loaves in thirds, then you'd have 15 thirds. Give two ... Read More »

Has Cracking the Coding Interview made it more difficult for recruiters to evaluate software developers? Gayle Laakmann McDowell, Author: Cracking the Coding Interview... 306 votes No. In fact, I would argue the opposite. Preparation is a good thing. Most recruiters want candidates to be prepared for interviews. By preparing, a candidate does their b... Read More »

What are the most environmentally wasteful designs? Jonathan Dirrenberger, Aerospace Engineer, Urban Transit, Na... 1.4k votes The automobile. To be technically correct, it really should be: the current way we use the automobile, i.e. inappropriately. The automobile is useful and in fact ideal for... Read More »

What's it like to be a math graduate student at Princeton? Tejal Bhamre 39 votes A2A. I'm technically in the physics department, working on a thesis in applied math with an advisor in math, so my opinion is perhaps more colored than the mean opinion. Bu... Read More »

What math level can be grasped by people of 100, 120, and 140 IQ? *e.g calculus, linear algebra, etc. Matthew Smedberg, Atheist, mathematician, homebrewer 86 votes Anyone aside from the actually brain-damaged has the ability to grasp all the basic undergraduate mathematics material: differential and (Riemann) integral calculus in up t... Read More »

What is the most intriguing mathematical concept you have ever encountered? Justin Rising 1.4k votes Inspired by today's mildly NSFW Saturday Morning Breakfast Cereal: Euler's formula tells us that . By taking , you get the famous identity . However, if you take , you f... Read More »