igcse math paper 2

[beewhiz997]

I think it was Y - invariant.. what do you say??

thats wat i wrote coz the point which moved was opp to the y axis so...

 

[Jaggia]

Guys. Help me out please. For the rotational symmetry question. for part a) i put I. for b) i put only N. not I. will I lose anything? and the inequality I got the final answer incorrect as i put 0<x<4.5. And for the function I exanded the x + 2 cubed. Will I lose anything? And what's the minimum for A*? Thanks

 

[Lostsoul]

Heyy, I believe it was Y Invariant and what was the 2 by 2 matrix followed?

 

[beewhiz997]

Heyy, I believe it was Y Invariant and what was the 2 by 2 matrix followed?

thats wat i put and the matrix i put (1 0
2 1)

 

[Lostsoul]

Guys. Help me out please. For the rotational symmetry question. for part a) i put I. for b) i put only N. not I. will I lose anything? and the inequality I got the final answer incorrect as i put 0<x<4.5. And for the function I exanded the x + 2 cubed. Will I lose anything? And what's the minimum for A*? Thanks

For the first one I put an O and I and for the second one I put O. It was a guess workk and the firts one required 2 letters, not the second one. So I don't think you'll loose out anythingg. &for the inequality I don't think you'll loose out much but I believe 0 should be included and not excuded. Well, even I expanded the x+2^3

 

[nehaloo]

hw can remember exactly the functions q. i mean their equations?

 

[beewhiz997]

For the first one I put an O and I and for the second one I put O. It was a guess workk and the firts one required 2 letters, not the second one. So I don't think you'll loose out anythingg. &for the inequality I don't think you'll loose out much but I believe 0 should be included and not excuded. Well, even I expanded the x+2^3

for 1st i put i then second n, but i completely messed up the inequality i did x<4.5...... anyway i didnt expand, what was the answer?

 

[0Louis0]

Guys. Help me out please. For the rotational symmetry question. for part a) i put I. for b) i put only N. not I. will I lose anything?

a) is correct.
b) the correct answer is I and N, and it has 1 mark. If you wrote one of them I'm afraid you lose the whole mark cause you cant' get a 1/2

 

[beewhiz997]

hw can remember exactly the functions q. i mean their equations?

one was gh(-1/5) i think... one was f inverse of x, and one was gf of x

 

[Lostsoul]

for 1st i put i then second n, but i completely messed up the inequality i did x<4.5...... anyway i didnt expand, what was the answer?

TBH, I don't remember the answers noww. Well, am I right for the T R I G O N O M E T R Y thingyy.. The first and the second??

 

[beewhiz997]

TBH, I don't remember the answers noww. Well, am I right for the T R I G O N O M E T R Y thingyy.. The first and the second??

yep u r, I and N is correct

 

[0Louis0]

TBH, I don't remember the answers noww. Well, am I right for the T R I G O N O M E T R Y thingyy.. The first and the second??

First one is only I, others are just wrong.
Second one is I and N, if you missed one of them you lose the mark.

 

[Lostsoul]

First one is only I, others are just wrong.
Second one is I and N, if you missed one of them you lose the mark.

Well, thankyou

 

[phantom]

Iam pretty sure the answer for the inequality was x<4.5
The Question was : 15x -43<5x+2
so : 15x-5x < 2+43

10x < 45

so final answer would be: x<4.5

 

[Lostsoul]

yep u r, I and N is correct

yep u r, I and N is correct

Inshallah we all have flying colours. There are still many papers to come. Don't loose hope

 

[Jaggia]

what's A star/

 

[Lostsoul]

&&& What was the value of x of that stretch ,factor 3 in matrices at the last page

 

[phantom]

&&& What was the value of x of that stretch ,factor 3 in matrices at the last page

I believe it was 5, not sure though, if u remember the matrix itself I can tell you for sure

 

[Hamzeh S]

Guys. Help me out please. For the rotational symmetry question. for part a) i put I. for b) i put only N. not I. will I lose anything? and the inequality I got the final answer incorrect as i put 0<x<4.5. And for the function I exanded the x + 2 cubed. Will I lose anything? And what's the minimum for A*? Thanks

if u got 2 A's and they add up to be less than the required for an A* u will get an A :S the minimum needed for an A is the the mark needed for an a in paper 4 and 2 combined now and the minimum needed for a c is the mark needed for a c on each paper combined combine c+a /2 it will give u the b now the difference between A and B add to it to the A it will give u the mark needed for an A*

 

[Hamzeh S]

Dude. If we get two A's. but the marks don't add up to 173.175. like if u get A in both papers. but ur marks add up to 165 let's say. that's A*? and in today's paper 22, for the rotational symmetry I only mentioned N. not I. will I lose? and was the gradient -1.1? and was the probablity 13 over 15

the probability ya it simplifies to 13/15 and the gradient always has a range i got -1.25 some got 1.1 i think a range of 1.05-1.45 or 1.5 is the answers