Mathematics
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rebeccaxhawaii (rebeccaxhawaii):
yay trig huehuehuehue
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rebeccaxhawaii (rebeccaxhawaii):
wait. lemme get the question.
rebeccaxhawaii (rebeccaxhawaii):
is c always negative?
rebeccaxhawaii (rebeccaxhawaii):
phase shift c/b
satellite73 (satellite73):
oh dear
c is probably a variable, so it could be positive or negative
rebeccaxhawaii (rebeccaxhawaii):
no but its|dw:1464142539442:dw| to find it right?
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satellite73 (satellite73):
to find what?
rebeccaxhawaii (rebeccaxhawaii):
phase shift
satellite73 (satellite73):
phase shift of what?
rebeccaxhawaii (rebeccaxhawaii):
this is why screenshots are my best friend
satellite73 (satellite73):
how about a nice screen shot
or light box or whatever those things are
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rebeccaxhawaii (rebeccaxhawaii):
yee you already know
satellite73 (satellite73):
ok yikes
this is my guess
the phase shift for \[\sin(bx-c)\] is \[\frac{c}{b}\]
satellite73 (satellite73):
so for example the phase shift for \[\sin(2x-3)\] would be \(\frac{3}{2}\)
satellite73 (satellite73):
and the phase shift for \[\sin(4x+1)\] would be \[-\frac{1}{4}\]
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rebeccaxhawaii (rebeccaxhawaii):
so its -c/b
satellite73 (satellite73):
look don't confuse yourself
satellite73 (satellite73):
they say it is \(\frac{c}{b}\)
that is for \[\sin(bx-c)\]
satellite73 (satellite73):
for some unknown reason they put the minus sign here \[\huge \sin(bx\color{red}-c)\]
rebeccaxhawaii (rebeccaxhawaii):
don't confuse myself? that a little much to ask, you know thats my thing.
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satellite73 (satellite73):
and said the phase shift was \(\frac{c}{b}\)
rebeccaxhawaii (rebeccaxhawaii):
thats*
rebeccaxhawaii (rebeccaxhawaii):
ohh okay so its just the opposite
satellite73 (satellite73):
but if they had writte \[\huge \sin(bx\color{blue}+c)\] then it would be \[-\frac{c}{b}\]
rebeccaxhawaii (rebeccaxhawaii):
OUI. Ill write that down. thanks chu
i already know "yw"
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satellite73 (satellite73):
here is the way to find it without memorizing anything
satellite73 (satellite73):
spose you got \[\cos(3x-7)\] and you want the phase shift
solve \[3x-7=0\\
3x=7\\
x=\frac{7}{3}\] and that is your phase shifty shift
satellite73 (satellite73):
yw
rebeccaxhawaii (rebeccaxhawaii):
called it huehuehue
but frfr thank you
satellite73 (satellite73):
is that how they chortle in hawaii? huehuehue?
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rebeccaxhawaii (rebeccaxhawaii):
rae jay watch this. you'll know what i mean. check pm.