luolimao
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• 71 votes cast

 1 Why is a norm a continuous function? (Question about existing proof) 0 How to prove that $A\cap B\subseteq C$ and $A^c\cap B\subseteq C$ imply that $B\subseteq C$?

### Reputation (36)

 +10 Why is a norm a continuous function? (Question about existing proof) +2 Help finding the $\lim\limits_{x \to \infty} \frac{\sqrt[3]{x} - \sqrt[5]{x}}{\sqrt[3]{x} + \sqrt[5]{x}}$ +2 Find the shortest distance from the point $P(0,1)$ to a point on the curve $x² - y² = 1$ , and find the point on the curve closest to $P$. +5 Finding rate of maximum temperature increase along surface

### Questions (2)

 2 Finding a surface area over an inconvenient region 1 Finding rate of maximum temperature increase along surface

### Tags (6)

 1 analysis 0 multivariable-calculus × 2 1 continuity 0 elementary-set-theory 1 real-analysis 0 integration

### Accounts (35)

 Super User 116 rep 6 Music: Practice & Theory 63 rep 4 English Language & Usage 43 rep 6 Mathematics 36 rep 7 Physics 30 rep 5