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Cambridge Chat (previously New Cambridge Students Entry 2004)

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BTW - Wednesday is miles away... Come to Tit Hall!

It's an ent for the women's basketball team... I'm sure you could try to find some more sporty girls to jump on top of you (no promises implied..!) :wink:

Reply 11301

Camford

polthegael

What are you confused about now? Aren't my salads good enough for you or something?

polthegael

Super on wednesday means work in tuesday at 1200 noon. Physics practical tomorrow 2-6 pm plus meeting with my DoS (ends 7:30pm) means I won't have time to do anything tomorrow. Today, is the only day I can do anything.

I've seen the women's blues team practice before... they are bad.... They are even worse than Pembroke (games played 7, games won 0).

Reply 11304

Camford

polthegael

Fine, get Rosie to do salads for you next time. I quit!

Reply 11305

Poc ar buile

That's an impressive record..! :wink:

Reply 11306

Camford

polthegael

That's an impressive record..! :wink:

Yeah... We rock at Basketball, as if...

We lost to Girton/Selwyn last week... We suck!!

Reply 11307

devilschild

Camford

I'm happy to offer you my service so long as they are NatSci IA maths ODEs.

Yep they are- I'm trying to solve these by changing the variables then using integrating factors, think i'm ok with the integrating factors bit once i have it in the right form, but how should i change the variables to get in the form:-

dy/dx + (Q(x))y = P(x)? (where Q(x) and P(x) just mean functions of x)

a) dy/dx - y= x(y^5)

b)dy/dx + y= y^2(cosx-sinx)

Also any hints on how to solve this would be appreciated

(lny-x)(dy/dx) - ylny = 0

(y-x)(dy/dx) + (2x +3y)=0

no worries if not, i feel v rude asking but am soooo confused!thanku ellie x

Reply 11308

crana9

i should pointout lex was not attempted-raped. nort in any sense of the concept. we were merely tickling him.

Reply 11309

Alaric

crana9

i should pointout lex was not attempted-raped. nort in any sense of the concept. we were merely tickling him.

Oh, that's less fun. Sorry, I mean that's much more preferable for Lex.

A.

Reply 11310

Camford

devilschild

I need to give it some thought before I can reply... I'm currently not doing maths. But, I will try to solve them before 12 tonight.

Reply 11311

Willa

anyone know quickly how to show that tanhx approaches -1 as x->-infinity!?
i can show that it approaches 1 as x goes towards infinity, but cant go in the other direction!

Reply 11312

Willa

ah just figured it out...np!

Reply 11313

Camford

Wow! Am I the only one that's not doing any maths?

Reply 11314

Willa

grrr....how the hell do you integrate tanhx?

Reply 11315

fishpaste

Willa

grrr....how the hell do you integrate tanhx?

tanhx = sinhx/coshx

=> I = ln(coshx) + A

= ln0.5 + ln(e^x + e^-x) + A = ln(e^2x +1) - x + A

Reply 11316

Willa

why is it every time i ask a question just after i post it, i work it out for myself!

Reply 11317

fishpaste

Willa

why is it every time i ask a question just after i post it, i work it out for myself!

sorry

Reply 11318

Camford

Willa

why is it every time i ask a question just after i post it, i work it out for myself!

should have tried that tad bit harder...

Reply 11319

Willa

ok so lets try again, see if the answer suddenly comes to me...someone answer it non the less

integrate cosh-1 x........i get a 0.5 appearing, someone help!