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Science-Related Homework Help Pre-calculus and Functions Topic started by: marinejas on Jan 4, 2021



Title: State the transformations on the function f(x)= 4sin(x-pi)-2 and then graph two cycles below.
Post by: marinejas on Jan 4, 2021
Using a table of values must be used in this case.


Title: Re: State the transformations on the function f(x)= 4sin(x-pi)-2 and then graph two cycles below.
Post by: bio_man on Jan 4, 2021
Hi marinejas (https://biology-forums.com/index.php?action=profile;u=963325), before I answer this, I'd like you to review the following videos in order of importance:

Video 1 (important):

https://www.youtube.com/watch?v=R1zVhbru28U

Video 2 (important - this video is in degrees, but it is very helpful):

https://www.youtube.com/watch?v=oNDaNg2Qh3s

More:

https://www.youtube.com/watch?v=PsvbplMGnoA
https://www.youtube.com/watch?v=-IQnUvaOUYE

Reply back once you've watched them...


Title: Re: State the transformations on the function f(x)= 4sin(x-pi)-2 and then graph two cycles below.
Post by: marinejas on Jan 4, 2021
Okay watched them!


Title: Re: State the transformations on the function f(x)= 4sin(x-pi)-2 and then graph two cycles below.
Post by: bio_man on Jan 5, 2021
Content hidden


Title: Re: State the transformations on the function f(x)= 4sin(x-pi)-2 and then graph two cycles below.
Post by: marinejas on Jan 5, 2021
would you mind doing one more example? there's also b) to this question which is f(x)= -2sin2(x+pi)-3 I did it yesterday and just wanted to check my answer if thats ok!


Title: Re: State the transformations on the function f(x)= 4sin(x-pi)-2 and then graph two cycles below.
Post by: bio_man on Jan 5, 2021
would you mind doing one more example? there's also b) to this question which is f(x)= -2sin2(x+pi)-3 I did it yesterday and just wanted to check my answer if thats ok!

Will do when I get home... Sorry about the timing


Title: Re: State the transformations on the function f(x)= 4sin(x-pi)-2 and then graph two cycles below.
Post by: marinejas on Jan 5, 2021
its all good :)


Title: Re: State the transformations on the function f(x)= 4sin(x-pi)-2 and then graph two cycles below.
Post by: bio_man on Jan 5, 2021
would you mind doing one more example? there's also b) to this question which is f(x)= -2sin2(x+pi)-3 I did it yesterday and just wanted to check my answer if thats ok!

So what's troubling you with this question, is it the creating a table part?

Best if you show us what you've done, then diagnose the problem.


Title: Re: State the transformations on the function f(x)= 4sin(x-pi)-2 and then graph two cycles below.
Post by: marinejas on Jan 5, 2021
I don't think I got the points right, comparing it to desmos


Title: Re: State the transformations on the function f(x)= 4sin(x-pi)-2 and then graph two cycles below.
Post by: bio_man on Jan 5, 2021
This one is more complicated because you'll need to use more x-values to get an idea of what's happening.

(https://biology-forums.com/gallery/42/6_05_01_21_1_48_29.png) (https://biology-forums.com/index.php?action=gallery;sa=view&id=42331)

See my table? I used 0, pi/2, pi, etc.

But you'll also have to use pi/4 increments to get a reasonable table of values.


Title: Re: State the transformations on the function f(x)= 4sin(x-pi)-2 and then graph two cycles below.
Post by: marinejas on Jan 5, 2021
Do you mind showing me the correct chart to this question it would help me see where I went wrong


Title: Re: State the transformations on the function f(x)= 4sin(x-pi)-2 and then graph two cycles below.
Post by: bio_man on Jan 5, 2021
(https://biology-forums.com/gallery/42/6_05_01_21_3_05_21.png) (https://biology-forums.com/index.php?action=gallery;sa=view&id=42332)

Just use your calculator to plug in those x values into each column to get the answer.


Title: Re: State the transformations on the function f(x)= 4sin(x-pi)-2 and then graph two cycles below.
Post by: marinejas on Jan 5, 2021
Okay I got the answer thank you!
Post Merge: 3 years ago

Just to make sure, the correct transformations for this question is reflection in the x-axis, vertical stretch by a factor of -2.
Horizontal compression by a factor of 1/2.
Phase shift pi units left.
Equ of axis is y= -3