Mathematics: Post your doubts here!

[The_0ne_and_0nly]

well i personally think the paper was difficult and different than others, in a sense that they were 2 question which brought out a-lot of doubts rest was fine. hoping the threshold will be low than usual. Btw i did 12

What was the question

 

[A*****]

Was the area in graph question found directly or the area of rectangle was subtracted from it?

 

[The_0ne_and_0nly]

Does anyone remember the questions

 

[The_0ne_and_0nly]

For revision

 

[Shemyaa]

Was the area in graph question found directly or the area of rectangle was subtracted from it?

You had to use dy/dx and take area of rectangle -area under the graph between x= M value and x=0

 

[Shemyaa]

I took area under the curve minus the area under the line the final answer was 4/3 I think

Yesss

 

[seanyboy]

Does anyone remember question 9 and their answer and for those who are wondering the hard 8 mark question from may june 2019 paper 12

 

[studyingrobot457]

Does anyone remember question 9 and their answer and for those who are wondering the hard 8 mark question from may june 2019 paper 12

For the 8 mark question:
k = -5
P(1.5,1)

 

[studyingrobot457]

Yesss

yes 4/3

 

[Haris878]

W

You had to use dy/dx and take area of rectangle -area under the graph between x= M value and x=0

Weren't we supposed to integrate rather than
Differentiate find area

 

[Shemyaa]

W

Weren't we supposed to integrate rather than
Differentiate find area

Yes yes sorry I meant integrated form :") obv if I used dy/dx I wouldnt have got 4/3
SORRRYY

 

[Haris878]

Anyone remember answes of vector question

 

[Haris878]

Um the k value for the second part were +-7.62 and the third part unit vector was 1/6 something

Same

 

[Haris878]

In last question in finding an expression for integral of y. I left out +c in the answer. Will I lose only 1 mark?

 

[Haris878]

What about the function question l. X is not equal to 2

Um the k value for the second part were +-7.62 and the third part unit vector was 1/6 something[/QUOTE

 

[Haris878]

Yea you remember the r value for the geometric progression

I made a mistake in that question

 

[Haris878]

In largest and smallest value question instead of specifying 3cos2x I wrote curve and line. Will I lose marks?

 

[Haris878]

Anyone remember full answer to function question. One part was x is not equal to 2. What were the other parts

 

[Haris878]

Do you remember how many marks the question was of

I remember the fg(x) question being a decimal

Dont rmemeber my answer, just guessing but was it 2.8 or 14/5

 

[fourtris46]

anyone writing stats paper7?