- #1

TonyC

- 86

- 0

You are using an out of date browser. It may not display this or other websites correctly.

You should upgrade or use an alternative browser.

You should upgrade or use an alternative browser.

- Thread starter TonyC
- Start date

- #1

TonyC

- 86

- 0

- #2

VietDao29

Homework Helper

- 1,426

- 3

[tex]-1 \leq \cos \alpha \leq 1[/tex]

So what can you say about the [tex]y = 21 - 5 \cos \frac{\pi t}{6}[/tex]

Viet Dao,

- #3

TonyC

- 86

- 0

What are you looking for?

- #4

VietDao29

Homework Helper

- 1,426

- 3

[tex] 5 \cos \frac{\pi t}{6}[/tex] is maximum.

So [tex] \cos \frac{\pi t}{6}[/tex] is maximum.

So y is minimum means that [tex] \cos \frac{\pi t}{6}[/tex] is maximum.

[tex]-1 \leq \cos \frac{\pi t}{6} \leq 1[/tex] so what t makes [tex] \cos \frac{\pi t}{6}[/tex] maximum?

Viet Dao,

- #5

mathmike

- 208

- 0

Share:

- Replies
- 2

- Views
- 430

- Last Post

- Replies
- 1

- Views
- 793

- Replies
- 4

- Views
- 568

- Last Post

- Replies
- 6

- Views
- 486

- Replies
- 2

- Views
- 544

- Replies
- 6

- Views
- 479

- Last Post

- Replies
- 6

- Views
- 1K

- Last Post

- Replies
- 4

- Views
- 355

- Replies
- 3

- Views
- 618

- Replies
- 4

- Views
- 371