OCR A Level Mathematics B (MEI) Paper 3 (H640/03) - 20th June 2024 [Exam Chat]

Scroll to see replies

Do you have to put xn for all x in newton raphson formula
Coordinates were (2,3) (2,-1) (4-root3/2 , -3/2) (4+root3/2 , -3/2)
Comp was ****
Original post by JT1234567
Coordinates were (2,3) (2,-1) (4-root3/2 , -3/2) (4+root3/2 , -3/2)

Can you leave the x points as decimals?
Original post by JT1234567
Coordinates were (2,3) (2,-1) (4-root3/2 , -3/2) (4+root3/2 , -3/2)

Exactly what I got, and so the line of reflection was x=2 ?
Original post by Sbaiahbe
Exactly what I got, and so the line of reflection was x=2 ?

Yeah
i got something funny for one 4+root 3 / 2

same same
Original post by Fourtjhi
Can you leave the x points as decimals?

Did it ask for exact values? If not then decimals are prob fine.
Original post by T!gger34
Did it ask for exact values? If not then decimals are prob fine.

Yes it said exact values
Did anyone else get -73/2 for c on the very last question (comprehension)?
(edited 1 month ago)
Original post by JT1234567
Yes it said exact values

Ah well. Mark(s) lost then.
Original post by Sbaiahbe
Did anyone else get -73/2 for c on the very last question (comprehension)?

yes!! I think I got the same
What gradient did you have to draw in q11
Original post by Fourtjhi
What gradient did you have to draw in q11

If you mean the one where u had to draw the gradient function of a quartic then you sketch a positive cubic with it crossing over x axis at the points where the cubic had stationary points
Does anyone remember how to do the parametrics question at the end?
Original post by JT1234567
Coordinates were (2,3) (2,-1) (4-root3/2 , -3/2) (4+root3/2 , -3/2)

i got the second 2 but not the first 2, how did you get them😭😭😭 idk what i did
Original post by fundamentalist-g
If you mean the one where u had to draw the gradient function of a quartic then you sketch a positive cubic with it crossing over x axis at the points where the cubic had stationary points

As well as stationary points corresponding to the quartic's points of inflection
That was literally a trig paper
what did u guys do for newtom raphson did u guys use 1/x - cosx for the f(x)