Question

Determin the period and amplitude of the following function. y=4 cos(3x/4+pi/4)

Answer 1

i really just need the period

Answer 2

(3x/4+pi/4) is bound between 0 and 2pi
0< 3x/4+pi/4 < 2pi
solve inequality (subtract pi/4 from all three portions, multiply by 4/3 to all three sections to get x by itselfP
the difference between your large value on the right and the small value on the left is your period.

Answer 3

-pi/4 < x < 7pi/4
7pi/4 -(-pi/4) = 8pi/4 = 2pi

Answer 4

so it would be 8/3--pi/3

Answer 5

-pi/4 < x < 7pi/4
7pi/4 -(-pi/4) = 8pi/4 = 2pi

Answer 6

8pi/4 = 2pi

Answer 7

=period

Answer 8

the cos function would start at -pi/4 and end at 7pi/4 for a period length of 2pi

Answer 9

okaay