Core 2 revision notes

An overview of the Core 2 course for Edexcel, i suggest you make your own paper notes of this on flip cards and then work through the exercises in the book, i've done every single question and i'm feeling very prepared. After this, exam papers. Good luck guys...

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  • Created by: Edd
  • Created on: 21-05-14 13:09
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Chapter one ­ Algebra and functions
· You can find factors of f(x) by subsituting
numbers in. If f(a)=0 then (x-a) is a factor.
· e.g
f(x)= x2 + 3x + 2
We can put -1 into f(x) to see if (x+1) is a factor.
f(-1)= -12 + 3x-1 + 2 = 1 ­ 3 + 2 = 0
There is no remainder, we know this is factor.…read more

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Chapter one ­ Algebra and functions
· If f(x) is a polynomial and f(a)= 0 then (x-a) is a
factor of f(x)
· If f(x) is a polynomial and f(a/b)= 0 then (bx-a)
is a factor of f(x)
· If a polynomial f(x) is divided by (bx-a) then
the remainder is f(a/b)…read more

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Chapter two ­ the sine and cosine rule…read more

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Chapter two ­ the sine and cosine rule
Proof:
Using Pythagoras we And using Trig we
know... know...
Therefore
...
Now, substitute for
h... And then by multiplying out we end up
with the cosine rule....
Now for x (we lose the x2 from the ­x2)…read more

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Chapter two ­ the sine and cosine rule
· You can use the sine rule to find an unknown side in a triangle if
you know two angles and the length of one of their opposite
sides.
· You can use the sine rule to find an unkown angle in a triangle if
you know the lengths of two sides and one of their opposite
angles.
· You can use the cosine rule to find an unknown side in a triangle if
you know the lengths of two sides and the angle between them.
· You can find the area of a triangle using the formula:
Area = 0.5 x a x b x sinC
Providing you know the length of two sides and the angle between them.…read more

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Comments

Aisha

thanks..

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