Homework Help
Can someone help me with these questions?
1) find dy/dx of the following equations:
A) xy = sin^2 (y)
B) tan(2x+y) = x
C) e^(xy) = 4
1) find dy/dx of the following equations:
A) xy = sin^2 (y)
B) tan(2x+y) = x
C) e^(xy) = 4
Original post by Improvement
Can someone help me with these questions?
1) find dy/dx of the following equations:
A) xy = sin^2 (y)
B) tan(2x+y) = x
C) e^(xy) = 4
1) find dy/dx of the following equations:
A) xy = sin^2 (y)
B) tan(2x+y) = x
C) e^(xy) = 4
Have you studied implicit differentiation? What have you tried so far?
I would suggest over viewing implicit differentiation where you differentiate y within the equation, as in not separated on one side. Then apply the respective rules for differentiating.
Alternatively you could try and differentiate with respect to y and see where that takes you.
Alternatively you could try and differentiate with respect to y and see where that takes you.
Yeah I completely forgot about that, I have the answer to the first and second one but for the middle one i get sec^2 instead of cos^2?
Original post by Improvement
Yeah I completely forgot about that, I have the answer to the first and second one but for the middle one i get sec^2 instead of cos^2?
Can you post your working and answer?
Original post by Improvement
Can someone help me with these questions?
1) find dy/dx of the following equations:
A) xy = sin^2 (y)
B) tan(2x+y) = x
C) e^(xy) = 4
1) find dy/dx of the following equations:
A) xy = sin^2 (y)
B) tan(2x+y) = x
C) e^(xy) = 4
Look up implicit differnetation and then post your workings with answers
B) gives sec^2(2x+y)*(2+dy/dx)=1 -> 2+dy/dx=1/sec^2(2x+y)=cos^2(2x+y) -> dy/dx = cos^2(2x+y)-2.
Original post by Improvement
Yeah I completely forgot about that, I have the answer to the first and second one but for the middle one i get sec^2 instead of cos^2?
Original post by constellarknight
B) gives sec^2(2x+y)*(2+dy/dx)=1 -> 2+dy/dx=1/sec^2(2x+y)=cos^2(2x+y) -> dy/dx = cos^2(2x+y)-2.
Please don't post full solutions. It's against the rules of the forum and far more beneficial to guide to a solution.
Quick Reply
Related discussions
- Homework: Share your experiences!
- Biology homeworks
- My year 10 gyg :)
- Binomial Expansion Help
- I'm on the verge of a mental breakdown
- maths department burning us out
- laziness/procastination issue in year 13
- English
- How do you do an assignment on Microsoft teams
- New to this!
- BHASVIC support and help?
- Sparx maths homework
- Jieay's Year 13 GYG - Actuarial Science applicant (2023/2024)
- Having trouble with my A-Level decisions..
- save me !!!!!!!!!!!!1
- tackling homework and revision
- year 10
- Mathswatch
- alevel biology and chemistry
- 85 days until A-levels
Latest
Trending
Last reply 1 day ago
Did Cambridge maths students find maths and further maths a level very easy?Last reply 2 weeks ago
Edexcel A Level Mathematics Paper 2 unofficial mark scheme correct me if wrongMaths
71
Trending
Last reply 1 day ago
Did Cambridge maths students find maths and further maths a level very easy?Last reply 2 weeks ago
Edexcel A Level Mathematics Paper 2 unofficial mark scheme correct me if wrongMaths
71
