### Answers (23)

 4 How to teach a kid geometry 2 Is it true that the polynomial $x^5 + x + 1$ has all its simple roots? 2 Why aren't repeating decimals irrational but something like $\pi$ is? 2 Show that if $x^3 + y^3 = z^3$ then 3 divides one of $x,y,z$ 1 Pattern Recognition and Machine Learning by Bishop - Exercise 1.1

### Reputation (612)

 +2 How to prove that a Local minimum is Absolute minimum in $R^3$ +10 Why aren't repeating decimals irrational but something like $\pi$ is? +10 Rules of log 2 and simplifying logs +10 Why does this “proof” fail to show rationals are uncountable?

### Questions (12)

 9 Verifying This Proof for Alternating Harmonic Series 2 Can gradient descent be used to find value of exponent? 2 Is there a Quick Way to Evaluate $\pi^3$ By Hand? 2 Derivative of $n!$ (factorial)? [duplicate] 2 Sum of All Real Numbers on $[0,1]$?

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 5 algebra-precalculus × 4 2 decimal-expansion × 2 4 geometry × 2 2 integers × 2 4 education 2 roots 3 modular-arithmetic × 2 1 sequences-and-series × 3 2 calculus × 4 1 proof-verification × 3

### Bookmarks (2)

 1 How to calculate the derivative of $\frac{1}{2} x \cdot Ax + b \cdot x$ 0 How to sum a “complex” finite geometric series?

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