Maths, Addmaths and Statistics: Post your doubts here!

[Faizan Muhammmad]

Almost understood it.

do you know that with your every post, your own signature calls it bullshit?

 

[M.Omar]

How do you find if 2 lines are perpendicular to each other given vectors?

U cant directly find them if they r perpendicular... i.e a+2b for instance ...coz tht will yield to a new vector tht cant be expressed as a scalar multiple of the said vector,no specific rule for this coz a and b can vary in dir and size
to do this we need to find these vectors in terms of their components I and j and then u cud simply carry out the gradient formula...

 

[asadalam]

TBH i prefer P2 to P1,cuz you can use a calculator and also check your answers easily.It might be a bit more hard but topics like trigonometry,number sequence,angle properties are easy enough,though mensuration does cause some problems..what about you guys?

 

[exploded diper]

U cant directly find them if they r perpendicular... i.e a+2b for instance ...coz tht will yield to a new vector tht cant be expressed as a scalar multiple of the said vector,no specific rule for this coz a and b can vary in dir and size
to do this we need to find these vectors in terms of their components I and j and then u cud simply carry out the gradient formula...

can u explain thoroughly with an example ..
or from a question in the past paper.....

 

[asadalam]

That's the problem. I still haven't mastered mensuration. Get stuck sometimes on the boat/lighthouse questions etc. It involves decimals and carrying them onto further questions and all. Not the easiest - you can't really be sure if you got it right or not.

Yeah,its in points so no sure way of knowing its right

PS,the torrent you gave me i downloaded,but the setup is stuck at 99%

 

[asadalam]

You can check the comments of the torrent and see if someone else had that mistake and was helped or something?

You can try Googling too, I found this just now. http://www.neoseeker.com/forums/410/t1623358-installation-stops-at-99/

Wo 99% red alert ki hai ye 99% Fifa ki hai,sare 99% ek jesay nai hotay =P Reinstalling for the 3rd time now,and its frickin slow.

 

[M.Omar]

Look at the doc first
So now we can find the gradient of a+b take its inverse reciprocal to find the perp line gradient which will be -4/3 and we can simply identify its unit vectors i.e perp a+b =3i-4j or the vector perp can also be 4j -3i

can u explain thoroughly with an example ..
or from a question in the past paper.....

Well the question was raised by FLRNAB though I cud not find it in past pprs

 

[asadalam]

Look at the doc first
So now we can find the gradient of a+b take its inverse reciprocal to find the perp line gradient which will be -4/3 and we can simply identify its unit vectors i.e perp a+b =3i-4j or the vector perp can also be 4j -3i

Well the question was raised by FLRNAB though I cud not find it in past pprs

I forgot a bit about vectors?Where do we use inverse of vector like change all signs to opposite?I remember we did that but i dont remember where?....

 

[Hamza_Akmal]

I wrote that the large piston has a larger area..
So the volume displaced by the movement of the smaller piston.. will force the large piston to move by a smaller distance to accommodate the same volume :/

I'm wrong

You are absolutely correct Oil is an INCOMPRESSIBLE liquid. It's volume is FIXED. The larger piston and smaller piston displace the samevolume of oil. As the larger piston has a larger are, it moves lesser distance than the smaller one @darkdestination

 

[FLRNAB]

do you know that with your every post, your own signature calls it bullshit?

Detected in high quantities in your post:

 

[asadalam]

Wo 99% red alert ki hai ye 99% Fifa ki hai,sare 99% ek jesay nai hotay =P Reinstalling for the 3rd time now,and its frickin slow.

Turns out i just had to wait,it finished after a few minutes
Thanks for the link bro,it works fine!

 

[Faizan Muhammmad]

Detected in high quantities in your post:

I see that you have removed it

 

[Faizan Muhammmad]

App say baat kee hai ?
Same to you

 

[Hamza_Akmal]

Keep your signatures but stop spamming on this thread. It's quite annoying, no longer amusing and is incurring curses for all those infected by the gifdisease

 

[FLRNAB]

App say baat kee hai ?
Same to you

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[Faizan Muhammmad]

You are part of the Gif-sease, and you don't know that if you talk to one of us, you talk to everyone?

Instead I suggest:

 

[Faizan Muhammmad]

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[***amd***]

faizan Muhammad
FLRNAB
exploded diper
and
Zain_Rocks

this thread is for maths, not memes, gifs or trolling. so plz stop ruining it b4 the moderator see it. or, this time i will myself tag someone.

 

[***amd***]

SalmanPakRocks

 

[DAZ1234]

That's the problem. I still haven't mastered mensuration. Get stuck sometimes on the boat/lighthouse questions etc. It involves decimals and carrying them onto further questions and all. Not the easiest - you can't really be sure if you got it right or not.

Hey you could save the values on your calculator if you're carrying them forward
That's what the 'A' 'B' 'C's are for on the calculator
I do that and always get the exact Marking Scheme answer xD