• We need your support!

    We are currently struggling to cover the operational costs of Xtremepapers, as a result we might have to shut this website down. Please donate if we have helped you and help make a difference in other students' lives!
    Click here to Donate Now (View Announcement)

Mathematics: Post your doubts here!

Messages
803
Reaction score
1,287
Points
153


A/N + B/(1800 - N) = 1/(N(1800 - N)) original frm

A/N + B/(1800 - N) = 1 ......... take lcm

A(1800 - N)+ B(N) = 1

taking N = o

A(1800-0) B(0) = 1

A = 1/1800

now take N= 1800

A(1800 - 1800)+ B(1800) = 1

B = 1/1800
so the fraactions wil be

1/1800N + 1/(1800 - N)

now put it into the real differential eq. i.e

1/1800N + 1/(1800 - N). dn = 1/3600. dt

at the R.H.s 3600 is being divided so transfer it to the rite side

3600/1800N + 3600/(1800 - N)

[2/N + 2/(1800 - N) ] = dt

now solve it ....... hope u gt it(y)
 
Messages
156
Reaction score
11
Points
18
Guys,I need help with the diagram related question in iteration.Normally they ask us to prove x or something using the diagram.
Some examples
q3 from may 2008.
q6 may 2010 p31.
q6 from may 2011 31 and many more.
Judging by this pattern,it seems though these questions are asked in the summer session so there is a high probability of it coming this time also.Please let me know how to tackle these type of questions,if any link available please let me know.
thanks
 
Messages
105
Reaction score
12
Points
28
i just did one mistake i took 3600 on other side messed up thing but when i tried a value of t my and ur answer and same solutions are marks cut for this
 
Messages
803
Reaction score
1,287
Points
153
i just did one mistake i took 3600 on other side messed up thing but when i tried a value of t my and ur answer and same solutions are marks cut for this
u took 3600 on other side??? what does that mean?? sorry bt explain a little clearer plx
 
Messages
803
Reaction score
1,287
Points
153
brother exactly the same way u did but ms says that for partial fractions answer is 2/N + 2/1800+N
if the final ans. u are arriving (the eq. ) is matching wid the ms. ans then I don't think that itx a big deal. as the partial fractions we did here is a way to reach the final ans.

apart if U did any mistake in solving partial fraction then surely it wil be penalised or else it wud nt hurt (y)

where as it is better to find the hint that 1800 is a multiple of 3600. it wil please the examiner and ur ans wil be easliy known
 
Messages
402
Reaction score
262
Points
73
2012-05-11_08-10_http-www.xtremepapers.com-pa.jpg

Can someone help me with this normal distribution question. And does suitable approximation always means normal distribution?????? plz help guys
 
Top