Edexcel Core 3 - 21st June 2016 AM

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Reply 780

Pablo Picasso

Original post by BrainJuice

I keep getting stuck on how to sketch graphs, any tips?

Which graph?

Reply 781

ParisInc.

https://b3755649dbd1afe3db91a899c3b9837b22326254.googledrive.com/host/0B1ZiqBksUHNYMG14YWtobVJUUms/for-Edexcel/Solomon%20L%20QP%20-%20C3%20Edexcel.pdf

could I have help on 1a please?

Reply 782

kkboyk

Original post by imran_

anyone recommend doing madasmaths papers?

Only if you're bored of past papers Although it's based on the edexcel specification, some of the question will be a little be more harder.

Original post by BrainJuice

I keep getting stuck on how to sketch graphs, any tips?

Practice Practice Practice (and also watch tutorials on ExamSolutions and M4THS/UKMathsTeacher).

Reply 783

BrainJuice

Original post by Pablo Picasso

Which graph?

I mean generally, however right now I'm stuck on finding the asymptote of y = 144 - 26e^-2x

Reply 784

cazorla96

Can someone help me on Q7B on jan 15 IAL C34? Thanks

Reply 785

Turtlebunny

Actually really nervous for C3 tomorrow, I really want an A*, badly :ahhhhh:

Reply 786

zombaldia

Original post by Mattematics

https://0025309b76bc88a0e4c3444acd0336108aeab3fa.googledrive.com/host/0B1ZiqBksUHNYOVV4M2RndmNyUkU/Edexcel%20C34%20-%20January%202016%20(IAL)%20Model%20Answers.pdf

Anyone understand how they did 6) c)?

Reply 787

Mattematics

Original post by zombaldia

Anyone understand how they did 6) c)?

-0.04 is -1/25.

Reply 788

Anon_98

Can I have some help with this question please:

I'm stuck on part b)

I feel like I'm doing something wrong -

I've substituted it like.. (sin(1-0.5(0.8)))^1/2 but my answer isn't correct.

Reply 789

ryanroks1

Really hoping trig graph sketches don't come up, especially arcsin, arccos and arctan. Even worse if they combine it with transformations, or heaven forbid modulus!

Reply 790

BrainJuice

I found it don't worry! I had to see what happens as x tends to infinity.

Reply 791

abro1089

anyone else pranging hard about this paper

Reply 792

Turtlebunny

Original post by Anon_98

Can I have some help with this question please:

I'm stuck on part b)

I feel like I'm doing something wrong -

I've substituted it like.. (sin(1-0.5(0.8)))^1/2 but my answer isn't correct.

What answer are you getting?

Make sure that you are also in radians.

Reply 793

ryanroks1

Original post by Anon_98

Can I have some help with this question please:

I'm stuck on part b)

I feel like I'm doing something wrong -

I've substituted it like.. (sin(1-0.5(0.8)))^1/2 but my answer isn't correct.

Is your calculator in radians?

Reply 794

zombaldia

Original post by Mattematics

-0.04 is -1/25.

Got that but didn't realise how e... dissapeared but I see they subbed in T= now. Cheeres

Reply 795

Mattematics

Original post by Questioner1234

Please can someone explain solomon paper F question 3b? Thanks

You don't need to know how to do that.

Reply 796

Polyrogue

Original post by Anon_98

Can I have some help with this question please:

I'm stuck on part b)

I feel like I'm doing something wrong -

I've substituted it like.. (sin(1-0.5(0.8)))^1/2 but my answer isn't correct.

You mean arcsin, right? Not sin?

Reply 797

linaxq

[QUOTECould integrate cosec^3x come up in Core 4?

someone do this

Reply 798

zombaldia

Original post by ParisInc.

https://b3755649dbd1afe3db91a899c3b9837b22326254.googledrive.com/host/0B1ZiqBksUHNYMG14YWtobVJUUms/for-Edexcel/Solomon%20L%20QP%20-%20C3%20Edexcel.pdf

could I have help on 1a please?

I got Y>2 but not sure if that's right as i'm prone to getting these wrong. Basicalls as x tends to infinity I got y tends to 2 and as x tends to 2.0000000001 y tends to infinity. Hence y>2

Is this what it said in mark scheme?

Reply 799

Economistician

Original post by Anon_98

Can I have some help with this question please:

I'm stuck on part b)

I feel like I'm doing something wrong -

I've substituted it like.. (sin(1-0.5(0.8)))^1/2 but my answer isn't correct.

Arcsin and sin are not the same thing.

It should be (arcsin(1-0.5(0.8)))^1/2 which is (inverse sin(1-0.5(0.8)))^1/2

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Edexcel Core 3 - 21st June 2016 AM

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