Hi,

Here is my working for finding A_n given knowledge that the sum is equal to a constant, l is a constant so the sinh(nl) part is just constant, my answer is mostly correct except it is 2 rather than 4 but I’ve gone over it so much and can’t find where the 4 comes from? Maybe where I am integrating but I’ve triple checked

It might seem stupid to ask about a mistake but small mistakes like this might be me actually misunderstandings part of the process

Here is my working for finding A_n given knowledge that the sum is equal to a constant, l is a constant so the sinh(nl) part is just constant, my answer is mostly correct except it is 2 rather than 4 but I’ve gone over it so much and can’t find where the 4 comes from? Maybe where I am integrating but I’ve triple checked

It might seem stupid to ask about a mistake but small mistakes like this might be me actually misunderstandings part of the process

Original post by mqb2766

Do you have the original question?

This is the original question, but I am just worried about the last boundary condition phi(x,l)= phi_0

Original post by mqb2766

Do you have the original question?

Sorry I meant to send this

Original post by mqb2766

Do you have the original question?

Actually never mind, I believe the problem is that x > 0 in the question but I am integrating over [pi, -pi]

Original post by grhas98

This is the original question, but I am just worried about the last boundary condition phi(x,l)= phi_0

Original post by grhas98

Sorry I meant to send th

Sorry I meant to send th

Original post by grhas98

Actually never mind, I believe the problem is that x > 0 in the question but I am integrating over [pi, -pi]

Sounds reasonable, but not checked.

Original post by grhas98

Actually never mind, I believe the problem is that x > 0 in the question but I am integrating over [pi, -pi]

Also the lhs looked like it was 0 not 2 when its was -pi .. pi.

Original post by mqb2766

Sounds reasonable, but not checked.

Oh yeah, ty

- Fourier Series of Sin 2x
- PDE: wrong initial conditions given for the wave equation?
- Recommended supercurriculars for computer science at top Russel group universities
- Vibrations study help please
- Arithmetic or geometric sequence
- Maths Maclaurin Series Homework Question
- Question about Un = Sn - S(n-1) formula (Sequences and series)
- Maclaurin Series Question
- Arithmetic sequence diverge or converge formula?
- Does a geometric series oscillate?
- ..
- A Level maths question
- MAT practice
- Maths Series Question
- Isaac physics C4a.2 - struggling
- Back up uni
- Further Mechanics Question
- New Spec A Level Sequences
- Binomial Expansion Question - A Level Maths
- Series function not differentiable at a point

Last reply 1 week ago

STEP 2 in 2024: Sharing Your Story! [PLUS WITH SOME SOLUTIONS AND PREDICTION]Maths

18

80

Last reply 2 weeks ago

A level maths paper 2 (pure and statistics) and paper 3 (pure and mechanics) ocrMaths

4

6

Last reply 1 week ago

STEP 2 in 2024: Sharing Your Story! [PLUS WITH SOME SOLUTIONS AND PREDICTION]Maths

18

80

Last reply 2 weeks ago

A level maths paper 2 (pure and statistics) and paper 3 (pure and mechanics) ocrMaths

4

6