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slimes slimes
wrote...
Posts: 162
Rep: 2 0
3 years ago
1. Would that be the correct answer?
2. I would like some help with, thank you.
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wrote...
Educator
3 years ago
1) Correct

2)


slimes Author
wrote...
3 years ago
Oh wow really, my teacher had a different answer or not sure if it's the same but for 1. I wrote her answer.
2. I was a little confused about, here's what I did exactly, a lot different than your answer, I also had some trouble multiplying them together. What do you think?
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wrote...
Educator
3 years ago
Here's my second attempt on both questions.


Answer rejected by topic starter
slimes Author
wrote...
3 years ago
Hey bio_man, thank you Slight Smile
question 1; Oh so my teacher was incorrect then..
question 2; So my answer was correct? If you look at the attachment, my answer is just positioned differently I'm pretty sure.
Answer rejected by topic starter
wrote...
Educator
3 years ago
question 2; So my answer was correct? If you look at the attachment, my answer is just positioned differently I'm pretty sure.

No, your #2 is wrong, here's another look (attached).

Please also watch the following video:



⭐ Don't forget to like it!
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slimes Author
wrote...
3 years ago
Hey bio_man I did watch and like the video! Did you use product rule? Because that's what I did. Would you also mind pointing out the error's on my attachment/my attempt to this question, it would be very helpful, I would like to make sure. Thank you again.
Answer accepted by topic starter
bio_manbio_man
wrote...
Educator
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Posts: 33342
3 years ago
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slimes Author
wrote...
3 years ago
Hi bio_man, no problem, but for the derivative of v, don't you have to multiply the 2 and the -sint? which would give you -2sintcost. It's very similar to one of the questions that I have done/asked you help for.
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wrote...
Educator
3 years ago Edited: 3 years ago, bio_man
I double-checked your attachment above, what I wrote seems right to my knowledge. I used the chain rule.
slimes Author
wrote...
3 years ago Edited: 3 years ago, slimes
oh okay, yeah I used the chain rule to find the derivative for v as well.
wrote...
Educator
3 years ago
So are we good now with this topic 😆?
slimes Author
wrote...
3 years ago
Hi, I just have one more question before I mark solved, I'm very sorry if keep annoying you with this topic, but can it also be written as -2sintsin4tcost + cos^2t4cos4t ?
wrote...
Educator
3 years ago Edited: 3 years ago, bio_man
-2sintsin4tcost + cos^2t4cos4t

Yeah, it's the same. Mine is presented nicer though, because I have the constants at the front of each term.

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I'm very sorry if keep annoying you with this topic

No need to apologize!
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