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Home Q & A Board Science-Related Homework Help Mathematics Pre-calculus and Functions
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marinejas marinejas
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Posts: 233
Rep: 3 0
3 years ago
Using a table of values must be used in this case.
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12 Replies
Replies
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#1
Educator
3 years ago Edited: 3 years ago, bio_man
Hi marinejas, before I answer this, I'd like you to review the following videos in order of importance:

Video 1 (important):



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



More:

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

Reply back once you've watched them...
marinejas Author
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#2
3 years ago
Okay watched them!
Answer accepted by topic starter
bio_manbio_man
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#3
Educator
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Posts: 33262
Rep: 3443 15
3 years ago
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marinejas Author
wrote...
#4
3 years ago
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!
wrote...
#5
Educator
3 years ago
Quote from: marinejas (3 years ago)
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
marinejas Author
wrote...
#6
3 years ago
its all good Slight Smile
wrote...
#7
Educator
3 years ago
Quote from: marinejas (3 years ago)
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.
marinejas Author
wrote...
#8
3 years ago
I don't think I got the points right, comparing it to desmos
wrote...
#9
Educator
3 years ago Edited: 3 years ago, bio_man
This one is more complicated because you'll need to use more x-values to get an idea of what's happening.



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.
marinejas Author
wrote...
#10
3 years ago
Do you mind showing me the correct chart to this question it would help me see where I went wrong
wrote...
#11
Educator
3 years ago


Just use your calculator to plug in those x values into each column to get the answer.
marinejas Author
wrote...
#12
3 years ago Edited: 3 years ago, marinejas
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
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