Question
consider y=-2+5cos(20x-5pie)
the period is?
the frequency is?
the vertical shift is?
the horizontal shift is?
the period is?
the frequency is?
the vertical shift is?
the horizontal shift is?
Answers
Reiny
more standard form
y = 5 cos 20(x - π/4) - 2
period = 2π/20 = π/10
frequency is 20 cosine curves per 2π radians
vertical shift : 2 units down
horizontal shift: π/4 to the right
y = 5 cos 20(x - π/4) - 2
period = 2π/20 = π/10
frequency is 20 cosine curves per 2π radians
vertical shift : 2 units down
horizontal shift: π/4 to the right