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Edexcel IAL F1 exam, 20th May 2016

How did he exam go guys? How did you do the Matrices question where det(A)>0 ?

I found the exam horrible, minimum 15 marks lost. Proof by induction part ii was not even attempted hahaha

for det A >0 i completed the square of the quadratic and at the end there was a plus 2.

Reply 2

neeldodh1

Original post by MoeHat

I found the exam horrible, minimum 15 marks lost. Proof by induction part ii was not even attempted hahaha

for det A >0 i completed the square of the quadratic and at the end there was a plus 2.

hahahaha i did attempt it however i was not able to prove it. i did b^2 - 4(ac)>0 which im already guessing is wrong.

Reply 3

MoeHat

Original post by neeldodh1

hahahaha i did attempt it however i was not able to prove it. i did b^2 - 4(ac)>0 which im already guessing is wrong.

nigglett that method shows that the quadratic has 2 real roots not greater than zero xD
All in all it was horrible. Did you do the y=kx matrix thingy? gods sake.. ughh

Reply 4

neeldodh1

Original post by MoeHat

nigglett that method shows that the quadratic has 2 real roots not greater than zero xD
All in all it was horrible. Did you do the y=kx matrix thingy? gods sake.. ughh

nope i didnt know what to do and i was left with only 5 mins or else i'd have figured it out. everythinh else was smooth apart from proving and matrices

Reply 5

saitama kun

yah k =5
b2-4ac i got -8 so i said det a>0
anyone gt root2 /2 fr dat z coefficient question as an answer

Reply 6

saitama kun

n is dere an unofficial markscheme out dere? if so plz add da link ...

Reply 7

neeldodh1

Original post by saitama kun

yah k =5
b2-4ac i got -8 so i said det a>0
anyone gt root2 /2 fr dat z coefficient question as an answer

which question was the "root2 /2 fr dat z coefficient question as an answer"

Reply 8

neeldodh1

Original post by saitama kun

n is dere an unofficial markscheme out dere? if so plz add da link ...

i will be able to get it by monday or tuesday

Reply 9

saitama kun

Original post by neeldodh1

which question was the "root2 /2 fr dat z coefficient question as an answer"

dere was dis quadratic equation of z4 where we had to find its 4 roots where 2 of dem were 3+-8i i think cant recall clearly
wat was da other 2 roots

Reply 10

neeldodh1

Original post by saitama kun

dere was dis quadratic equation of z4 where we had to find its 4 roots where 2 of dem were 3+-8i i think cant recall clearly
wat was da other 2 roots

+root 3 i and -root 3 i

Reply 11

saitama kun

kk i think dat answer is correct

Reply 12

MoeHat

In the complex number question, what did u get for z? I got z is 1/6 plus 1/2 i

Reply 13

kprime2

Original post by neeldodh1

How did he exam go guys? How did you do the Matrices question where det(A)>0 ?

Original post by MoeHat

I found the exam horrible, minimum 15 marks lost. Proof by induction part ii was not even attempted hahaha

for det A >0 i completed the square of the quadratic and at the end there was a plus 2.

Original post by neeldodh1

hahahaha i did attempt it however i was not able to prove it. i did b^2 - 4(ac)>0 which im already guessing is wrong.

Original post by MoeHat

nigglett that method shows that the quadratic has 2 real roots not greater than zero xD
All in all it was horrible. Did you do the y=kx matrix thingy? gods sake.. ughh

Original post by neeldodh1

nope i didnt know what to do and i was left with only 5 mins or else i'd have figured it out. everythinh else was smooth apart from proving and matrices