• ## Ackbach

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#### Need help

Hey

Could you give me a hint how to explain this example?

Need help to prove statement in red frame.

Sara jj Today, 16:55

#### Re: Transportation calculus

simplified the initial cost function ...

$C(v) = 1375\left(\dfrac{44.5}{v} + \dfrac{14.9}{180-v}\right)$

minimum cost occurs

skeeter Today, 12:16

#### Re: 299What is the acceleration

$v(t) = \cos{t}+\sin{t} \implies a(t) = \cos{t}-\sin{t} \implies a\left(\dfrac{3\pi}{4}\right) = -\sqrt{2}$

skeeter Today, 09:26

#### Re: Continuity in Topological Spaces ... M & M, Lemma 3.2 (ii) ... ...

This is actually a proof of (ii) $\Rightarrow$ (iii) in Lemma 3.2. So we are assuming that (ii) holds. In particular, since $\overline{ f(A) }$ is closed

Opalg Today, 04:14

#### Re: 299What is the acceleration

Sorry I'm late but my favorite WiFi Hangouts told me to leave.

So $a(t)=\sin{t}-\cos(t)$ .
Then plug in
\$a\left( \dfrac{3\pi}{4}\right)

karush Today, 00:24