# 1st order differential equation questionWatch

#1
can someone explain how to do the 1st order differential equation, 'dy/dx = (y^2 - 1)/e^0.5x'

i more or less get how to do it, its just the answer im getting wont turn into the one in the back of my book, and i'm not certain why.
0
9 years ago
#2
can you post some working?
0
#3
Ah okay I didn't think to use partial fractions to integrate the LHS, as i got the RHS but couldnt get the LHS to be correct.

Many thanks.
0
9 years ago
#4
(Original post by Lou Reed)

first separate the variables and integrate, so:

then you have to partial fraction the LHS to integrate it...

thats what i get anyway, hope its right
that look right to me - the bit to spot is the partial fractions bit.

PS. any problems with maths these days use wolfram alpha

http://www58.wolframalpha.com/input/...F%28y%5E2-1%29
0
X

new posts
Latest
My Feed

### Oops, nobody has postedin the last few hours.

Why not re-start the conversation?

see more

### See more of what you like onThe Student Room

You can personalise what you see on TSR. Tell us a little about yourself to get started.

### University open days

• Cardiff Metropolitan University
Sat, 27 Apr '19
• University of East Anglia
Could you inspire the next generation? Find out more about becoming a Primary teacher with UEA… Postgraduate
Sat, 27 Apr '19
• Anglia Ruskin University
Health, Education, Medicine and Social Care; Arts, Humanities and Social Sciences; Business and Law; Science and Engineering Undergraduate
Sat, 27 Apr '19

### Poll

Join the discussion

#### Have you registered to vote?

Yes! (546)
37.73%
No - but I will (113)
7.81%
No - I don't want to (100)
6.91%
No - I can't vote (<18, not in UK, etc) (688)
47.55%

View All
Latest
My Feed

### Oops, nobody has postedin the last few hours.

Why not re-start the conversation?

### See more of what you like onThe Student Room

You can personalise what you see on TSR. Tell us a little about yourself to get started.