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Who's doing GCSE Further maths?

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Avatar for BW999
BW999
9
Original post by mxn
So you know for the matric question were we suppose to multiply the numerater and denominator of the first matric by 4 or were we suppose to multipy just the numerator by 4?


These were matrices not fractions!! You had to multiply both the top and bottom parts by 4 I believe. I think I got a=3 and b= -20 (or 20, not sure what I put)
Original post by PrinceKian
You had to use the trig identity: sin^2x + cos^2x = 1. Put in the x value (or theta value) and then solve for cos, eventually ending up with the +/- square root of 5/6 and as it was an obtuse angle it had to be a negative value, ending up with -5/6. XD


Oh ****, I wrote 5/6, would I lose a mark or more than 1 mark?
Original post by BW999
These were matrices not fractions!! You had to multiply both the top and bottom parts by 4 I believe. I think I got a=3 and b= -20 (or 20, not sure what I put)


I got that too and I don't even know how to do matrices lmao so don't trust me...
Reply 123
Avatar for mxn
mxn
10
Original post by BW999
These were matrices not fractions!! You had to multiply both the top and bottom parts by 4 I believe. I think I got a=3 and b= -20 (or 20, not sure what I put)


YES! thank god i got the same 3 and -20
Can someone explain that question about K to me please?
Original post by mxn
So you know for the matric question were we suppose to multiply the numerater and denominator of the first matric by 4 or were we suppose to multipy just the numerator by 4?


A matrix doesn't have numerators or denominators to speak. It was a scalar multiplication meaning four times everything in the matrix.
Original post by Chittesh14
Can someone explain that question about K to me please?


You had to work out K. You had to work it out at the point where it touched the X axis, and then work out what the Y value would be without K. Then as the value of Y was -9 and the curve stopped at the X axis, K had to be 9 to make it 0.
Reply 127
Avatar for BW999
BW999
9
Original post by gregy521
Seemed like a reasonable paper, the one about the obtuse angle was a tough one though. I couldn't answer that one.


I managed to figure it out, but put the solution for an acute angle :frown: I think I'll still pick up most of the marks
Original post by gregy521
You had to work out K. You had to work it out at the point where it touched the X axis, and then work out what the Y value would be without K. Then as the value of Y was -9 and the curve stopped at the X axis, K had to be 9 to make it 0.


Oh ffs.
I knew x = 0 lol and that's it lmao for the tangent.
I was thinking like you can't factorise this crap because it's got k ...
Original post by mypetpikachu
I decided to out 5 for that one..with no working out what so ever...


🏹🍆Never under estimate the power of a common pikachu🍆🏹


Thug life lol.
Original post by Chittesh14
Thug life lol.


😝😝😂


🏹🍆Never under estimate the power of a common pikachu🍆🏹
Original post by lily628
how did people do the last q? i used the cosine rune but then was stumped after a few more steps


Cosine rule.
Cos P = 1/3.
Use the rule, you find u have to do 4/12 to get 1/3.
So, you do 13n^2 - 4n^2 = 9n^2
That's w^2 so w = 3n.
w = 3n same as the other side, so the triangle is isoceles.
What did u guys put for the infinity question...?


🏹🍆Never under estimate the power of a common pikachu🍆🏹
Original post by mypetpikachu
What did u guys put for the infinity question...?


🏹🍆Never under estimate the power of a common pikachu🍆🏹


3/5 lmao.
Don't even know if its right and don't understand how it's 1 mark.
3/5 is correct

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Original post by Hsevras


<3.
Original post by Chittesh14
3/5 lmao.
Don't even know if its right and don't understand how it's 1 mark.


Oh....I put 10000000000000.....


🏹🍆Never under estimate the power of a common pikachu🍆🏹
Original post by Hsevras


Lmao...that just shows how not doing revision is the worst thing possible...


🏹🍆Never under estimate the power of a common pikachu🍆🏹
Original post by Chittesh14
Oh ****, I wrote 5/6, would I lose a mark or more than 1 mark?


5/6 is the answer

Posted from TSR Mobile
Original post by mypetpikachu
Lmao...that just shows how not doing revision is the worst thing possible...


🏹🍆Never under estimate the power of a common pikachu🍆🏹


I revised 140 pages yesterday in 1 hour :wink:.
Basically, most of it I done in A-level Maths C1 lool.
I forgot how to fkin differentiate in the exam lol but it came in my head after.

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