Question

what is the amplitude period and phase shift of f(x)=-4cos(2x-pi)+3 need help please super fast

Answer 1

f(x)=-4cos(2x-π)+3
First, the -4 means the graph will be inverted and the amplitude will be 4.
Next, (2x-π) means the graph will be moved right π
Finally, the +3 means the graph will be moved up 3

Answer 2

is the second one the period?

Answer 3

and the +3 is the phase shift

Answer 4

helloooo

Answer 5

The period is going to be 2π/B, where B=2. Therefore, the period is π.
As for phase shift, the shift is π units right and 3 units up

Answer 6

phasr shift os the shift pi/2 units to right and 3 units up and -4 is amplitude @areeb @Aveline

Answer 7

@dinamix The shift will be π units to the right. Also, the amplitude is never negative, it is just 4. The negative just represents that the graph is inverted.

Answer 8

lol amplitude can be negative why not lol @Aveline

Answer 9

@dinamix Amplitude is an absolute value; it represents the range of the function

Answer 10

@Aveline did u have proof and i'm sure 200% can be be negative cuz its lowest

Answer 11

@dinamix Well, I'm 201% it can only be positive ;)
The amplitude is a distance, and distances can't be negative

Answer 12

lol

Answer 13

I'm studying this right now.
The amplitude is 4 (because a distance can never be negative)
The phase shift is pi/2. You find phase shift by making 2x-pi equal to 0 then solving.