I'm an IGCSE Maths Teacher - Post your questions here.

[notnek01]

Hello,

It's getting close to exam time and I'm sure there are many past paper questions that students are having difficulty with. I noticed that most questions in other threads go unanswered so I thought I'd make this thread that only contains past paper questions.

So if you have an IGCSE Maths past paper question please give the i) year ii) paper number and iii) question number. Also, you must post all your working/ideas. If you don't tell me where you're up to, I can't (and won't) help you.

 

[MoatazKotb♥]

15​

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d) Solve the equation x2+f(x)=0

Show all your working and give your answers correct to 2 decimal places




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[4]​

 

[notnek01]

15​

​

​

d) Solve the equation x2+f(x)=0​

Show all your working and give your answers correct to 2 decimal places​

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[4]​

Please read my first post. You have not said which paper this is from and you haven't posted any working.

 

[MoatazKotb♥]

aaaits from May June 2011 Variant 3 Paper 4

 

[notnek01]

aaaits from May June 2011 Variant 3 Paper 4

If you look at the start of question 9 it says: f(x) = 3x + 1.

So x^2 + f(x) = 0 is the same as x^2 + 3x + 1 = 0.

You can solve x^2 + 3x + 1 = 0 using the quadratic formula.

 

[MoatazKotb♥]

aaaaaaaaaaaaaaaahaaaaa so now i use the formulas ?

 

[notnek01]

aaaaaaaaaaaaaaaahaaaaa so now i use the formulas ?

Yes

 

[MoatazKotb♥]

THAAANK YOU !!!!!!!!!!!

 

[sara fayed]

can u give me your email so i can send u my doubt .
if u dont mind please.\

 

[notnek01]

can u give me your email so i can send u my doubt .
if u dont mind please.\

[email protected]

This isn't my main email, just in case you are a spammer

 

[CaptainDanger]

You can help some students here : [URL="https://www.xtremepapers.com/community/threads/mathematics-post-your-doubts-here.2565/"]Mathematics: Post your doubts here![/URL]

 

[StudentXYZ]

Hello,

It's getting close to exam time and I'm sure there are many past paper questions that students are having difficulty with. I noticed that most questions in other threads go unanswered so I thought I'd make this thread that only contains past paper questions.

So if you have an IGCSE Maths past paper question please give the i) year ii) paper number and iii) question number. Also, you must post all your working/ideas. If you don't tell me where you're up to, I can't (and won't) help you.

Please help me with this question " May/June 2010 Paper 22 Q8" . I am having trouble with the sin cosine graph. I tried using the formula sinx=sin(180-x) and cosx=-(cos180-x), but it doesn't work.

 

[notnek01]

Please help me with this question " May/June 2010 Paper 22 Q8" . I am having trouble with the sin cosine graph. I tried using the formula sinx=sin(180-x) and cosx=-(cos180-x), but it doesn't work.

The first one is equivalent to sin(x)=cos(x) so this is where the graphs of sin(x) and cos(x) intersect.

The second one is a bit trickier : you need to find the x-value where the difference between the curves is 0.5. For example, at x=90, sin(x)=1 and cos(x)=0 --> the difference between the curves is 1. So a difference of 0.5 will occur somewhere between the intersection point (difference = 0) and x=90 (difference = 1). You can use the graphs to find this.

 

[StudentXYZ]

The first one is equivalent to sin(x)=cos(x) so this is where the graphs of sin(x) and cos(x) intersect.

The second one is a bit trickier : you need to find the x-value where the difference between the curves is 0.5. For example, at x=90, sin(x)=1 and cos(x)=0 --> the difference between the curves is 1. So a difference of 0.5 will occur somewhere between the intersection point (difference = 0) and x=90 (difference = 1). You can use the graphs to find this.

Thank you very much

 

[SIstudy]

Hello,

It's getting close to exam time and I'm sure there are many past paper questions that studen

​

ts are having difficulty with. I noticed that most questions in other threads go unanswered so I thought I'd make this thread that only contains past paper questions.

So if you have an IGCSE Maths past paper question please give the i) year ii) paper number and iii) question number. Also, you must post all your working/ideas. If you don't tell me where you're up to, I can't (and won't) help you.

0580_w12_qp_41
Page 16, question 9, Part (c)

 

[notnek01]

0580_w12_qp_41
Page 16, question 9, Part (c)

Distance = Speed x Time

Speed = 300,000 km/s

Time = 365 days

So change time into seconds and then multiply to find Distance.

 

[mak kings]

AOA.,
well in MAY JUNE,2001,p2, Q14 ,,i didnt understand the (b) part ,!!! cud u plz explain

 

[notnek01]

AOA.,
well in MAY JUNE,2001,p2, Q14 ,,i didnt understand the (b) part ,!!! cud u plz explain

Does this diagram help?

 

[mak kings]

hmmm...bt the (b) answer is 210 , 330 ,, ididnt get that !??

 

[notnek01]

hmmm...bt the (b) answer is 210 , 330 ,, ididnt get that !??

There is a mistake in the mark scheme. The two answers should be 230 and 310.