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Trigonometry 13 Online
OpenStudy (anonymous):

PLEASE HELP! what is the equation for the graph shown?

OpenStudy (anonymous):

OpenStudy (anonymous):

Please this is my last question and I'm really struggling

OpenStudy (perl):

the period of this tan function is 2pi

OpenStudy (anonymous):

when submitting an answer for an equation with a variable, be sure to use teh variable form. for example the answer 2n = 4 should be written as n = 2

OpenStudy (anonymous):

that si what it says above the question

OpenStudy (anonymous):

@jim_thompson5910 think you can help me out with this one as well?

OpenStudy (anonymous):

This one is a little different that the one before @jim_thompson5910

jimthompson5910 (jim_thompson5910):

the amplitude, phase shift, and vertical shift will be 0

OpenStudy (anonymous):

Ok So what equation form would I use?

jimthompson5910 (jim_thompson5910):

actually, the phase shift isn't zero, let me think that one over

OpenStudy (anonymous):

and @perl said teh period is 2pi so that and amplitude is 0

OpenStudy (anonymous):

Ok no problem!

OpenStudy (anonymous):

@Mertsj think you can help us out?

jimthompson5910 (jim_thompson5910):

yes, the period is definitely 2pi

OpenStudy (anonymous):

Ok I have that down, and the amplitude is definitley 0, correct?

jimthompson5910 (jim_thompson5910):

normally, tan(0) = 0 but there isn't a root at x = 0 there is a root at x = pi, so things have been shifted over pi units to the right

jimthompson5910 (jim_thompson5910):

the phase shift is pi

OpenStudy (anonymous):

Ok Amplitude = 0 phase shift = pi and period is = 2pi, now how will I construct an equation?

jimthompson5910 (jim_thompson5910):

y = A*tan(B(x - C)) + D A = 1 is the amplitude B = pi/period = pi/2pi = 1/2 C = pi is the phase shift D = 0 is the vertical shift

OpenStudy (anonymous):

I thouht the amplitude was 0 ok. so y = 1 *tan (1/2 ( x - pi) + 0

OpenStudy (anonymous):

does that look correct @jim_thompson5910

jimthompson5910 (jim_thompson5910):

more like y = 1*tan(1/2(x-pi)) + 0

jimthompson5910 (jim_thompson5910):

you can write that as y = tan( (x-pi)/2 )

OpenStudy (anonymous):

ooh ok got it. Thank you does that correlate to what they have written over teh question: when submitting an answer for an equation with a variable, be sure to use teh variable form. for example the answer 2n = 4 should be written as n = 2

jimthompson5910 (jim_thompson5910):

I'm not 100% sure of what they mean by that particular sentence

jimthompson5910 (jim_thompson5910):

my guess is that if you can solve for a variable, then do so in this case, it's a bit cumbersome to solve for x

jimthompson5910 (jim_thompson5910):

I'd just leave it as y = tan( (x-pi)/2 )

OpenStudy (anonymous):

ok thank you!

jimthompson5910 (jim_thompson5910):

np

OpenStudy (anonymous):

x=100

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