Mathematics: Post your doubts here!

[zain123]

can anyone of you ask your teacher or someone, about how high would the threshold be?

 

[iamnumberfour]

I messed up pretty bad in the volume one, the vectors i managed. But i dont know if my answers correct......but the saddest thing was, i messed up the difrentiation of the trignometry function to find stationary points :'( i just cudnt figure it out. Came home and realized what i had to do.......i hope i get an A....

 

[Mobeen]

guys chill ! ho gya jo hona tha .. choro pare..

 

[leadingguy]

I am fed up of nonsense and badluck to me in papers

 

[Muhammad Ahmer Ali]

Were the two values of lambda in the last part were 1 and 3?

 

[Bushrafareed]

Can we discuss the paper?

 

[smzimran]

Can we discuss the paper?

Not before 24 hours!

 

[Bushrafareed]

Not before 24 hours!

okay

 

[divesh190]

guys i need help with this normal distribution Q7c and d
http://www.xtremepapers.com/papers/Edexcel/Advanced Level/Mathematics/2005 Jan/S1Jan05Q.pdf

 

[aaakhtar19]

Woooaahhhh !!!! wat a LEVEL paper 32 was that
CIE are like pressurized to increase the difficulty level
Alhamdulillah paper went well expecting 75/75 Insha Allah

What abt u guys ??

 

[Mobeen]

Woooaahhhh !!!! wat a LEVEL paper 32 was that
CIE are like pressurized to increase the difficulty level
Alhamdulillah paper went well expecting 75/75 Insha Allah

What abt u guys ??

seriously ?? :O

 

[angelicsuccubus]

Woooaahhhh !!!! wat a LEVEL paper 32 was that
CIE are like pressurized to increase the difficulty level
Alhamdulillah paper went well expecting 75/75 Insha Allah

What abt u guys ??

I feel like the character in Mobeen 's profile after reading that ^

 

[aaditya menon]

Woooaahhhh !!!! wat a LEVEL paper 32 was that
CIE are like pressurized to increase the difficulty level
Alhamdulillah paper went well expecting 75/75 Insha Allah

What abt u guys ??

Haha, great to hear that. I'm expecting 50/50 in M1, not so confident about P3 though. Just a little confused about the 2 points in the last question,
didn't get time to cross check my answers with the equations given. Hoping for 72-74/75

 

[Mobeen]

I feel like the character in Mobeen 's profile after reading that ^

lol ! i put this my fb dp specially for the CIE's

 

[Sky8]

Anyone did paper 33 ? How was it ?

 

[redapple20]

Hey wat was to b done in vector last part? 32

 

[azambezi]

1 hour 45 min isnt enough! If the papers were 2hours i wouldnt be so damn depressed right now lol.

 

[omar hazem]

can anyone give me tips and advises or any revision notes for the S1 exam next thursday??

 

[reina81]

in ON11 P61, Q 5i, Why have they taken the probability as .97 instead of .94 ?

http://www.xtremepapers.com/papers/...S Level/Mathematics (9709)/9709_w11_qp_61.pdf
http://www.xtremepapers.com/papers/...S Level/Mathematics (9709)/9709_w11_ms_61.pdf

 

[DragonCub]

in ON11 P61, Q 5i, Why have they taken the probability as .97 instead of .94 ?

http://www.xtremepapers.com/papers/CIE/Cambridge International A and AS Level/Mathematics (9709)/9709_w11_qp_61.pdf
http://www.xtremepapers.com/papers/CIE/Cambridge International A and AS Level/Mathematics (9709)/9709_w11_ms_61.pdf

The 94% probability is the area in the MIDDLE, which means there is a "tail" on either side, of 3% probability. When you look for z value you need to count from the left side, or negative infinity. So here the probability is 0.94 + 0.03 = 0.97