Question

8. How does the graph of y = -3cos(2θ + 45°) + 3 differ from the graph of y = cos(θ)?

Answer 1

one sec, Il brb

Answer 2

i'm here to to the answer ... jst :)

Answer 3

How did you do on those homework problems? How far off was I?

Answer 4

its a lot of shifts, reflecting, and compressing of the graph of cos theta. ;[

Answer 5

OK, Im back:)

Answer 6

open study follow me i can help u i think so .....

Answer 7

Follow you where?

Answer 8

open2study first sketch the basic graph for cos \[\Theta\]

Answer 9

hahaahahahaha .. here ... :D

Answer 10

I got ya! Let me work it out!:D

Answer 11

now sketch the graph for \[2\Theta\]

Answer 12

ok

Answer 13

u will find that the original graph is stretched now by 2

Answer 14

the original graph will stretched now by 2 vertically

Answer 15

It has a period of pie, Its amplitude is -3, its vertical shift is 3, its phase shift is 45/2 to the right.

I think? :D

Answer 16

Not sure if right ^

Havent done in a while.

Answer 17

did u get me till now? i will bring u to where u need to reach :)

Answer 18

yup:), I understand

Answer 19

^ all those answers are incorrect btw.

Answer 20

really?

Answer 21

now u got second graph that is cos ( \[2\Theta\] ) and add 45 to cos (\[2\Theta\] ) and sketch this new graph .. u will find that graph is shifted toward neg x axis by 45 deg

Answer 22

@petewe, what is the correct answer?

Answer 23

45 deg = pi / 4

Answer 24

-3cos(2θ + 45°) + 3

-vertical stretch by factor of 3
-reflection on x axis
-horizontal compression by factor of 1/2
-horizontal translation of 22.5 left
-vertical translation 3 up.

Answer 25

don't know why the last guy is converting degrees to radians when the original function is clearly in degrees.

Answer 26

@pet bcoz i jst wanted to make the asked understand that is why

Answer 27

the asker*

Answer 28

Thank you @petewe, Thank @Jatinbansalhot, the both of you helped so much:)

Answer 29

open2study.... you are welcome.... i am new i jst tried my best...

Answer 30

@jatinbansalhot, its good that you are trying hard. Peole in OS need users like you who try their very besst. dont change that:)