The curve above is the graph of a sinusoidal function. It goes through the point and . Find a sinusoidal function that matches the given graph.

Thank you for the opportunity to help you with your question!

Where is the curve put it down on the comment i will give you the answer ok ......

16.png

It goes through the point (3,1)

Hopefully it uploads correctly this time, thanks!

Just put it now .....;

Every time I reply to this thread it refreshes the page..I'm sorry for all the duplicate comments. Are you able to see the png?

Sorry for late i just didn't saw the graph ......;

the function is :

f(x) = - cos(x(pi/3))

Please each time you have any other homework invite me or ask me directly i will give you the best answer

Good luck

Thanks Karim!

I can tell by the graph that the Amplitude is 1 and I know to find B is 2pi/absolute value of B. Do you mind explaining how you were able to find -Cos(x(pi/3))? Thanks :)

ok we know : f(x) = A cos(kx) - E

so : E = 0

and : A = - 1

and : k = 6

so : 2pi/k = 6

so : k = 2pi/6

so : k = pi/3

so we have just to put each terme on here place :

so :f(x) = -Cos(xpi/3)

is clear now

is clear now ??

Great explanation! I can do the rest now thank you very much!

Great that s what i want , but test is cos() or sin() ok , and good luck

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