Son | search
Click here to view Son news from 60+ newspapers.
Bookmark or Share- How many sides does a circle have? - Mathematics Stack ExchangeMy son is in 2nd grade. His math teacher gave the class a quiz, and one question was this: If a triangle has 3 sides, and a rectangle has 4 sides, how many sides does a circle have? My first reaction was "0" or "undefined". But my son wrote "$\infty$" which I think is a reasonable answer.
- determinant - Set of Linear equation has no solution or unique solution ...Probably the most straightforward method (to fully distinguish between the various possibilities) that I've seen is transforming the corresponding augmented matrix into row-reduced echelon form.
- Taylor series expansion of sin(x) - Mathematics Stack ExchangeStack Exchange Network. Stack Exchange network consists of 183 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.
- trigonometry - Why $\sin(n\pi) = 0$ and $\cos(n\pi)=(-1)^n ...Stack Exchange Network. Stack Exchange network consists of 183 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.
- Boy Born on a Tuesday - is it just a language trick?The only way to get the 13/27 answer is to make the unjustified unreasonable assumption that Dave is boy-centric & Tuesday-centric: if he has two sons born on Tue and Sun he will mention Tue; if he has a son & daughter both born on Tue he will mention the son, etc.
More
