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October 20, 2014

October 20, 2014

Posted by **kim** on Friday, February 12, 2010 at 1:14pm.

(a) f(x) = -2cosx f(x) = 0.25sinx

(b) f(x) = -3sin(2x+3)+7 f(x) = sinx + 4

Find :

(i) the amplitude

(ii) the period

- pre calc -
**drwls**, Friday, February 12, 2010 at 1:45pmI don't see why they are asking for the numbers for two different functions for each "part"

The amplitude is the coefficient (constant) in front of the sin or cos term.

The period is 2 pi divided by the coefficient of x.

For f(x) = 0.25 sinx ,

the amplitude is 0.25 and the period is 2 pi.

You do the others

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