00:01
Hi, thank you so much for your question.
00:02
So we're given two functions.
00:05
Okay, so the two functions are y equals two times sine of pi over three times x minus two together minus four.
00:16
Okay, and the second function is y equals negative four plus two times sine of pi over three times x minus two.
01:05
Sorry, it's cosine.
01:12
Cosine of pi over three times x minus 3 .5.
01:34
So are these two equations equivalent? first, let's find out the amplitude.
01:43
Amplitude is two, okay, without doubt.
01:47
And the period, two pi over pi over three, that is six.
02:03
Next, horizontal shift.
02:15
Horizontal shift is two pi over three...