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Mathematics: Post your doubts here!

ahmed abdulla

ahmed abdulla

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syed1995 said:
The answer equation you have given is incorrect or you are missing something out of the question..

if T1 = 2 , then T2 = 2*0.75 or not? Just answer me this. If it is Then what I have done is correct.

Verify this for me.
a = 2
r = 3/4
n = n ?

a)
Sn = a(1-r^n)/1-r
Sn = 2(1-0.75^n)/1-0.75
Sn = 2-2(0.75^n)/0.25
Sn = 8-8(0.75^n)

b)
Sinf = a/1-r
Sinf = 2/1-0.75
Sinf = 8
Can't be greater than 8.
Click to expand...
your very fist step is incorrect !!!
T2 will be 2*2*0.75 ... as it goesdown and re robounds ... exacly like mecahnice when it goes to max height
 
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ahmed abdulla said:
your very fist step is incorrect !!!
T2 will be 2*2*0.75 ... as it goesdown and re robounds ... exacly like mecahnice when it goes to max height
Click to expand...
ahmed abdulla said:
your very fist step is incorrect !!!
T2 will be 2*2*0.75 ... as it goesdown and re robounds ... exacly like mecahnice when it goes to max height
Click to expand...
yes the same point struck me from the bigening but coulnt apply it to the equation to get the answer
 
syed1995

syed1995

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ahmed abdulla said:
your very fist step is incorrect !!!
T2 will be 2*2*0.75 ... as it goesdown and re robounds ... exacly like mecahnice when it goes to max height
Click to expand...

See, I don't have mechanics so I don't know that. If it were simple GP it would have been solved the way i was doing. Now it includes M1 stuff and I don't have M1 so I don't think it would be coming in the paper since some people opt for S1 and S2 and are Commerce students and have never studied physics at all...
 
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syed1995 said:
See, I don't have mechanics so I don't know that. If it were simple GP it would have been solved the way i was doing. Now it includes M1 stuff and I don't have M1 so I don't think it would be coming in the paper since some people opt for S1 and S2 and are Commerce students and have never studied physics at all...
Click to expand...
yes but no harm in attempting it
 
ahmed abdulla

ahmed abdulla

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syed1995 said:
See, I don't have mechanics so I don't know that. If it were simple GP it would have been solved the way i was doing. Now it includes M1 stuff and I don't have M1 so I don't think it would be coming in the paper since some people opt for S1 and S2 and are Commerce students and have never studied physics at all...
Click to expand...
BRO ITS P1 ONLY ... but it has got a relationship with m1 ,,, there is a big chance of it coming as i said before
 
syed1995

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ahmed abdulla said:
BRO ITS P1 ONLY ... but it has got a relationship with m1 ,,, there is a big chance of it coming as i said before
Click to expand...

Like I said before. Not everyone has studied physics before, I have never seen a question like this in maths before, apart from mensuration (area/volume formulae) which requires some extent of basic physics knowledge.

Commerce students with S1/S2 will be at a disadvantage with a question like this. that's all that I am saying.

It can't be solved with a simple AP/GP formula. since what we use to calculate terms is a(r^n-1) while in this it becomes 2*a(r^n-1)

while for sum it is Sn=a(1-r^n)/1-r .. For this It can't be used .. No matter how many changes you make.

2(1.75-2(0.75^n)/1-0.75 is what it is becoming .. in it's simplest form..

where a(1.75-2(r^n)/1-r) is what the formula is becoming... Now if you mechanic peeps can go somewhere from here.. that'd be good..

All I can is it ain't a ordinary Progression question.. and it won't be coming in the paper.
 
ahmed abdulla

ahmed abdulla

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syed1995 said:
Like I said before. Not everyone has studied physics before, I have never seen a question like this in maths before, apart from mensuration (area/volume formulae) which requires some extent of basic physics knowledge.

Commerce students with S1/S2 will be at a disadvantage with a question like this. that's all that I am saying.

It can't be solved with a simple AP/GP formula. since what we use to calculate terms is a(r^n-1) while in this it becomes 2*a(r^n-1)

while for sum it is Sn=a(1-r^n)/1-r .. For this It can't be used .. No matter how many changes you make.

2(1.75-2(0.75^n)/1-0.75 is what it is becoming .. in it's simplest form..

where a(1.75-2(r^n)/1-r) is what the formula is becoming... Now if you mechanic peeps can go somewhere from here.. that'd be good..

All I can is it ain't a ordinary Progression question.. and it won't be coming in the paper.
Click to expand...
ok ... so which day is ur exam ... and at what SPECIFIC time is it ??? i will be talking to you on that day ///
 
gary221

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ZdqJMVu.png

winter 2005 paper 7 q 3
plz help....
 
mominzahid

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Hi.. Can someone please help me solve this problem? its from w10 qp 33.
this is thje question. any help would be really appreciated. Thanks
 

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syed1995

syed1995

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A star said:
no way m1 is much easier s1 is hard enough


i guess we will have to siscuss all the papers by friday with three consecutive papers no time will be there. half grade decided by 14th may and still going on to 11th june cie logic -_-
Click to expand...

I find S1 to be easy.. but then again I haven't studied M1 at all .. the only main thing in S1 which is difficult is Probability/Permutation .. but since my PnC has been good from add maths itself that doesn't seem that difficult to me.

Yaar sahi kar rahay hain .. jab pahlay do paperz mein bunda ghaltian karay ga.. tu he will need atleast 15 days each (phy,chem) to get atleast 30-35 in MCQs :D taakay kuch tu izzat reh jaye :p

Honestly, 7,8,9 are deadly for me. I have to attempt 4 papers in 3 days. from then onwards it is a breeze until 10-11 June.
 
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