graph the function y=(2/3)cos(x+(pi/3))

Question

jdoe0001 · Answer

A( Bx + C ) + D

A = amplitude
C = horizontal shift, C > 0, to the left, C < 0, to the right

anonymous · Answer

i dont understand what A B C and D stand for nor where to go from here. could you explain a bit more?

anonymous · Answer

i should say i dont know what of the values i have stand for the amplitude and horizontal shift and so on. and i am very confused on how to solve this.

jdoe0001 · Answer

ok... do you know the graph for cos(x)?

anonymous · Answer

no

jdoe0001 · Answer

hmmm, ok, what's the value of cosine at 0, 90, 180 and 360 degrees?

jdoe0001 · Answer

darn I missed, one, and 270 degrees

anonymous · Answer

here are my answer choices if it helps explain to me.

anonymous · Answer

0?

jdoe0001 · Answer

well, what values does it have at 0, 90, 180, 270, 360 degrees?

anonymous · Answer

i'm sorry i have no clue. this is my worst subject and it makes little to no sense to me... :/

jdoe0001 · Answer

http://www.youtube.com/watch?v=ijTIr-aykUk

anonymous · Answer

the video won't load...

jdoe0001 · Answer

hmm, it loaded for me

anonymous · Answer

my computer is finicky sometimes, its kinda old and breaking down

anonymous · Answer

But after looking in my book and looking at some examples i think its graph 3. is that right?

jdoe0001 · Answer

well, what clues you that?

anonymous · Answer

a similar equation in my textbook

jdoe0001 · Answer

well, the idea behind the exercises is that you understand it, no copy it over

jdoe0001 · Answer

the video is good, so check it out :)

anonymous · Answer

as soon as my computer gets fixed i will.