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-   -   Mechanics Notes: Chapter 4,12 and 9 (http://www.cssforum.com.pk/css-optional-subjects/group-ii/applied-mathematics/93695-mechanics-notes-chapter-4-12-9-a.html)

waqas izhar Saturday, August 09, 2014 11:54 AM

nope. as far as i know, no question of statics came from any other book than ghori.
and cover dynamics first and then ode/pde and numerical methods and then tensors/vectors in the end

and check if any Qs from ex 3 has come. i intend to solve the exercise but i have packed my key book.

Roshnain Swati Saturday, August 09, 2014 10:15 PM

Hi bro - Below is the link for Kryzsig book and manual.

[url]https://www.dropbox.com/sh/oy35emljlf1mlm6/AADi_GrdHG4YSAjwDW0iUMcza[/url]

ODEs tell me that concept of integration is more important than the ODEs themselves. Having good grip on integration techniques is very important - the little part is recognition of the type of ODE.

waqas izhar Sunday, August 10, 2014 01:10 PM

@ Roshnain. Which method have you reached? I am doing ODEs too.

Roshnain Swati Sunday, August 10, 2014 01:37 PM

Am done with the First Order ODEs. Will start Second order tomorrow. And yes- I saw those naughty questions there in the past paper - 1b of 2013 - and 1b of 2012. I am sure there must be something terribly wrong with that of 2012 as it cant be solved in any way. I think there must be a typo. For the 2013 - my conjecture is that there is a typo too.

waqas izhar Sunday, August 10, 2014 02:11 PM

which book are you using? we can do it together you know. if you mail me i might me able to send you a very good book too.

Roshnain Swati Sunday, August 10, 2014 02:18 PM

Am using Kryszig - And Schaum series. I have the MGraw Hills book too but have not gone through it. Am just brushing up my previous understandings.

Did you look at the 2013 1B question?

waqas izhar Sunday, August 10, 2014 04:06 PM

rora, ma ta mail uka, sta pe paisay na lagi. zama profile ke id shta.

i will do something about 2013 1b,

and tell me which exercise you are attempting at the moment.

waqas izhar Sunday, August 10, 2014 04:33 PM

2013 1b. replace dy/dx with [B]dx/dy[/B]

remove "=0" from the end and eula! [B]Bernoulli![/B]

Roshnain Swati Sunday, August 10, 2014 07:11 PM

The removal of zero is obvious. But how can we replace dy/dx with dx/dy without actually manipulating the other terms in the equation. I tried to make it Bernauli of the type dx/dy + P(y)x = Q(y)x^3 but couldnt actually manipulate it that way. Can you share if you have solved.

Baqi, if you suggest a direct replacement of dy/dx with dx/dy, i dont think we can do it like that.

waqas izhar Sunday, August 10, 2014 07:37 PM

it is a typo na bhai. that is why replace dy/dx with dx/dy. let me solve it. there is no other way. and forgive me for asking this: are you my bro or my sis?


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