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# Assignment # 1MTH401 (Fall 2013)

Assignment #  1MTH401 (Fall 2013)

Total marks: 20

Lecture # 1 to 10

Due date:  27/11/2013

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Question 1:                                                                                                          Marks 6+4

a)      Determine whether the given differential equations are homogeneous or non-homogeneous. Also, mention the degree of homogeneous differential equations.

1.                                 i.
2.                               ii.
3.                             iii.

b)      Find the integrating factor of the following differential equation.

Question 2:                                                                                                         Marks 10

Convert the given Bernoulli differential equation into linear form and find its solution.

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### Replies to This Discussion

this mathod is wrong this is lineor form of equ  multy bhot side 1/cosx than u can slove

regards,,

opr  N=cosx  hai. glti se 2 dfa cosx cosx likha gya. sory for tht

shahmeer yar ap galti kar rahy ho agar ap apni he de huwi equation may daykhay to cosx kay sath minus ka sign hay means -cosx to uska differentiate karny kay bad

y=-(cosx)

dy/dx= -(-sinx)

so

dy/dx= + sinx

this one is correct

not -cosx

yes yes, equ. extct he hai. i checked it again. '-' miss ho gya tha mere se. so exct equ. ka IF nikalna he ni hota hain. it's already exct equ.

waqar khalid butt can u share solve question

teachr khud keh rhe hian k IF malom kre tu ykinan exact nhi hai given equ. so usy ye prove krna zrori nahi hai k given equ. exct nhi. direct IF malom kr skte hain after writing equ in standrd form. im sure jo form opr ap ko di hai wo corect hai

is ka mtlb ye bilkol b ni hai k if b ho, or han teachr ny if pocha hai ye ni kaka k is ka if hai

may be i am wrong

bhai ye MCQ ni hai. long question hai ye. agr IF ni nikalta tu teachr na 4 makrs kis liye rkhe hain??? IF niklta he hai na. aur long questions ma ye ni hota k IF niklta he na ho aur teachr keh de k IF nikalo. thnks

butttttttttt how we finddddddddddddddddddddddddd            IF?

procedure handouts ma majod hai at page#35 and 36. Case-I will be used. very much easy question please

How can you write this equation is exact first solution is sinx and 2nd is -sinx .HOw can you say it is exact

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