ria2389
ria2389 ria2389
  • 02-05-2019
  • Mathematics
contestada

Plz help me with this

Plz help me with this class=

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tramserran
tramserran tramserran
  • 02-05-2019

Answer: b) -5 ≤ y ≤ 1

Step-by-step explanation:

y = 3 cos (4x) - 2

     ↓                 ↓

amplitude       vertical shift

The amplitude is 3 which gives a range of -3 to 3 but there is also a shift down of 2 units so the new range is: -3 - 2 = -5 to 3 - 2 = 1

-5 ≤ y ≤ 1

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