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Mathematics 18 Online
OpenStudy (anonymous):

How do you find the period of a graph? How do you find the amplitude and period of this function: y=-3 sinx

OpenStudy (amistre64):

its the dot at the end of a sentence

OpenStudy (amistre64):

3 is the amplitude since its all out in front

OpenStudy (amistre64):

and the period is a normal sin period of 2pi

OpenStudy (angela210793):

isn't 2pi the period of sinx?

OpenStudy (amistre64):

it was yesterday, but you know how trigsters like to change things on ya without notice

OpenStudy (angela210793):

O.o..How come i never get wht u say?..O.o

OpenStudy (amistre64):

its my florida southern drawl ;)

OpenStudy (angela210793):

Perhaps....:)

OpenStudy (anonymous):

So I am still confused on how to find the period of the graph?

OpenStudy (amistre64):

sin(x) is nekkid so you just use its normal period; its normal cycle time of 2pi

OpenStudy (amistre64):

sin(2x) means that the period is twice as fast and only take 1/2 the time to make a complete cycle; sin(2x) has a period of 2pi/2 = pi

OpenStudy (amistre64):

sin(pi x) has a period of 2pi/pi = 2

OpenStudy (angela210793):

@amistre64 that's wht i was going to write :S :P :)

OpenStudy (amistre64):

trig is 90% memorization.... after that its just 10% rememberization lol

OpenStudy (amistre64):

you was gonna say its nekkid? lol

OpenStudy (angela210793):

huh? no i have no idea wht that means....i was going to write that example u wrote with sin(2x)....:P:P:P

OpenStudy (anonymous):

ok thanks!

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