I am having trouble coming up with this equation:

Max: 12,000 Min: 6,500 P=10

I know y=a sin(bx+c)+d

a= 12000-6500/2 = 2750

d= 12000+6500/2 = 9250

b= 2pie/10=pie/5

How do I find c?

Is it necessary in this equation?

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- Sep 12th 2009, 02:04 PMhorsepower.850Sinusodial Equations
I am having trouble coming up with this equation:

Max: 12,000 Min: 6,500 P=10

I know y=a sin(bx+c)+d

a= 12000-6500/2 = 2750

d= 12000+6500/2 = 9250

b= 2pie/10=pie/5

How do I find c?

Is it necessary in this equation? - Sep 12th 2009, 07:57 PMwalleye
c is only there is the sin graph is moved left or right

a regular sin graph (without a c value) passes through the origin (0,0) - Sep 13th 2009, 12:47 PMhorsepower.850Yes, but..
So when finding the sinusodial equation, should I put 0 in the c position? Or should I leave it out all together?

- Sep 14th 2009, 01:11 AMwalleye
yep leave it 0

so just solve, now for

y=a sin(bx)+d