WJEC C1 - May 18th 2016

Original post by FusionNetworks

I think I just had a mind blank and put x=4 xD

Lol, although tbf to you 4 was an x-value somewhere! I got than the 4's cancelled and then got confused but as I say, only 1/2 marks so no need to panic.

Reply 44

Someone please make a mark scheme😢 I would but I can't remember all the questions, someone must have a better memory than me!

Reply 45

Jack1066

Original post by jonb365

Lol, although tbf to you 4 was an x-value somewhere! I got than the 4's cancelled and then got confused but as I say, only 1/2 marks so no need to panic.

4s cancelled meaning gradient BD = 0

therefore equation of the line BD was Y=M

Both B and D had the same X coordinate so the line would be flat therefore no gradient.

At least thats the answer I got. Someone correct me please if I'm wrong

Reply 46

I had 19 for the f(2.25) did anyone else?

Reply 47

Original post by Jack1066

The equation of BD was x=4. The line of x=4 is a line going straight up, therefore the gradient is actually infinity. The point B and the point D both lie on the line x = 4. That would have thrown a lot of people.

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Reply 48

Jack1066

Original post by Naomi173

I had 19 for the f(2.25) did anyone else?

I think I messed that one up. I got like some big fraction like 157/8

Reply 49

Original post by Jack1066

I think I messed that one up. I got like some big fraction like 157/8

I probably messed it up too! I done it really quick at the end.. I had (X-2)(2x+5)(4x-1) as the factors I think and then substituted 2.25 as X and got 19😬

Reply 50

Original post by Naomi173

I probably messed it up too! I done it really quick at the end.. I had (X-2)(2x+5)(4x-1) as the factors I think and then substituted 2.25 as X and got 19😬

Nope, 19 is correct

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Reply 51

Original post by PedanticStudent

Nope, 19 is correct

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Thank god!what about the last question, I had 200 as the volume

Reply 52

Original post by Naomi173

Thank god!what about the last question, I had 200 as the volume

Also correct!

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Reply 53

Original post by Naomi173

Thank god!what about the last question, I had 200 as the volume

How did you find the exam overall, anything you didn't get or know you got wrong?

Reply 54

Original post by Jack1066

I think I messed that one up. I got like some big fraction like 157/8

Not being funny but I thought that was a bit of a ridiculous non-calc question to work out for one sodding mark (1 mark for subbing in 2.25 for all x-values I think)!

Reply 55

sallyanne123

Since that paper was far easier than last year's C1, I wouldn't be surprised if they ramp it up for C2 next week. Good luck to us all!

Reply 56

Luketidley

I did everything else in the last question and found the correct value of x but i forgot to put it back into the equation :frown:

((

Reply 57

Original post by PedanticStudent

How did you find the exam overall, anything you didn't get or know you got wrong?

The finding m hurt my head, normally those question 1 questions are simple but I couldn't get my head around it! everything else went fine I think! Apart from drawing the graph of the answers of the completing the square and simultaneous equations, my graph drawing skills are terrible! You?

Reply 58

Original post by Luketidley

I did everything else in the last question and found the correct value of x but i forgot to put it back into the equation :frown:

((

Same but not to worry, you'll just lose the 1 mark (although it's bloody annoying I know).

Reply 59