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math

posted by on .

f(x) = 64 + 27cos(2pi/365(x+145))

what would be the period

i tried by solving 2pi/(2pi/365)

period = 365 but this doesn't seem right

  • math - ,

    No that would be right. When you divide by a fraction it is the same as multiplying by the reciprocal. so it would be 2pi x 365/2pi

    so it would be 2pi365/2pi and they would cancel out.
    Plus the equation is set up for a yearly period anyway. 365 is the period of days

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