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# Edexcel IAL F1 exam, 20th May 2016

1. How did he exam go guys? How did you do the Matrices question where det(A)>0 ?
2. 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.
3. (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.
4. (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
5. (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
6. 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
7. n is dere an unofficial markscheme out dere? if so plz add da link ...
8. (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"
9. (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
10. (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
11. (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
12. kk i think dat answer is correct
13. In the complex number question, what did u get for z? I got z is 1/6 plus 1/2 i
14. (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
(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
(Original post by saitama kun)
n is dere an unofficial markscheme out dere? if so plz add da link ...
(Original post by neeldodh1)
which question was the "root2 /2 fr dat z coefficient question as an answer"
(Original post by neeldodh1)
i will be able to get it by monday or tuesday
(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
(Original post by neeldodh1)
+root 3 i and -root 3 i
(Original post by saitama kun)
kk i think dat answer is correct
(Original post by MoeHat)
In the complex number question, what did u get for z? I got z is 1/6 plus 1/2 i
I have written solutions here
http://www.thestudentroom.co.uk/show...3#post65033993
15. (Original post by kprime2)
I have written solutions here
http://www.thestudentroom.co.uk/show...3#post65033993
thank you

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