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anonymous
 one year ago
When graphing this equation, where do I put this part of it?
anonymous
 one year ago
When graphing this equation, where do I put this part of it?

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anonymous
 one year ago
Best ResponseYou've already chosen the best response.0\[y = 2+3 \sin [3(x\frac{ \pi }{ 4 })]\] What do I do with the second 3?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0So 2 is the center line, 3 is the amplitude, pi/4 is the phase angle. What's the 3 in front of the x?

zepdrix
 one year ago
Best ResponseYou've already chosen the best response.1Sounds right so far! :) \[\large\rm y=A \sin[B(xC)]+D\]A gives us amplitude, B gives us period in this way \(\rm Period=2\pi/B\), C is our phase shift, D moves the center line,

zepdrix
 one year ago
Best ResponseYou've already chosen the best response.1It's the amount of time it takes for the sine function to complete one full cycle. Or in this case it would maybe be more appropriate to say, the amount of x for sine to complete a full cycle, to get back to it's starting point.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0So is it like the "distance" from one high point to the next?

zepdrix
 one year ago
Best ResponseYou've already chosen the best response.1dw:1444370742440:dwA single period here

zepdrix
 one year ago
Best ResponseYou've already chosen the best response.1Yes, that's a good way to think of it!

zepdrix
 one year ago
Best ResponseYou've already chosen the best response.1Usually sine function starts at the mid point though, so measuring top to top might be a little weird

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0@zepdrix when done can u help me?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0So for cosine it's maybe top to top, but sine it's mid to mid?

zepdrix
 one year ago
Best ResponseYou've already chosen the best response.1dw:1444370812720:dwThis is one full period of the normal sine curve. So careful when you say mid to mid! :) We pass through the middle an extra time.

zepdrix
 one year ago
Best ResponseYou've already chosen the best response.1Notice that I've captured the entire shape with these red dots, One camel hump up, and one more down. Then it repeats that over and over.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Haha oh you're right. So basically two curves, though one of the cos curves is cut in half.

zepdrix
 one year ago
Best ResponseYou've already chosen the best response.1ya cosine is a little weird. you're getting `half a camel hump`, then the entire lower one, then `another half of the upper one`.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0I think I get it now. :D Thanks for explaining!
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