Maths C2 discussion!! :)

[mohamad yassine]

ya i got exactly same as u

For trig i got 56.3 for the tan one (1 solution), and for the other one i got 72,144,216,288.

 

[abdelrahman hisham]

Nah its one solution but 93.sth

 

[heyitsme]

Didn't you have to add both the areas? Like integrate in separately?

apparently the answer is 49. smth. i got that before but i cut it off and wrote 36.

 

[abdul aziz123]

apparently the answer is 49. smth. i got that before but i cut it off and wrote 36.

i got 36 too isnt it correct?

 

[abdul aziz123]

Nah its one solution but 93.sth

I GOT 30 AND 300 OF THE ANGLES PART YES THE COS AND SIN PART :/ CORRECT? WHAT DID U GET?

 

[trsa1995]

guys I GOT THE WRONG COORDINATES IN FIRST PART OF differenciation. WILL I GET ECF? AND HOW MANY MARKS WILL I LOOOOSE??????
morever i got the point as MINIMUM as i got a POSITIVE ANSWER AND THATS CORRECT! PLEASE SOMEONE ANSWER MY Q.!

 

[mohamad yassine]

nop its 20
first u find length frm centre to P then u have radius 5
so length u get will be 5root17 and r =5
so 5root17 squared = 5 sqaured + PT squared si pt is 20

Okayy thank you so is what i said correct??? i got 12.1

 

[abdelrahman hisham]

What is the angles pat[quote="abdul aziz123, post: what is the angles part ur talkin bout i dont remeber any thing like this and btw do you know how many marks the pt length part has??

 

[heyitsme]

i got 36 too isnt it correct?

nope. it isn't. we don't subtract both the areas, we add them up. i forgot the exact question, but it had something to do with the area being below the region or smth like that. i got 36 too lol.

 

[mohamad yassine]

nono i didnt round i just remebr the first number of each answer

well those answers are correct but you have to give most to 1 dp and if you rounded wrong you will loose marks.

 

[cardude456]

nope. it isn't. we don't subtract both the areas, we add them up. i forgot the exact question, but it had something to do with the area being below the region or smth like that. i got 36 too lol.

i checked on my calculator and i got 36..........

 

[abdul aziz123]

guys I GOT THE WRONG COORDINATES IN FIRST PART OF differenciation. WILL I GET ECF? AND HOW MANY MARKS WILL I LOOOOSE??????
morever i got the point as MINIMUM as i got a POSITIVE ANSWER AND THATS CORRECT! PLEASE SOMEONE ANSWER MY Q.!

ecf dont worry u will lose 2 maarks max !

 

[abdelrahman hisham]

How many marks did the pt length part have?? Anybody answer plzz

 

[abdul aziz123]

What is the angles pat[quote="abdul aziz123, post: what is the angles part ur talkin bout i dont remeber any thing like this and btw do you know how many marks the pt length part has??

it was 3 marks i got 20?
correct?

 

[livlivliv]

i checked on my calculator and i got 36..........

It's because on the calculator it doesn't take into consideration that you must change the sign to positive if the area is under the graph. You had to change -20/3 to 20/3. The minus is just telling you it is under the x-axis.

 

[abdelrahman hisham]

Yes it was 20 i did all the steps right but wrong signs will i lose all 3??

 

[heyitsme]

i checked on my calculator and i got 36..........

kids in my centre said it's 49. smth. i'm not sure. :/ but if its 36, YAY.

 

[abdul aziz123]

kids in my centre said it's 49. smth. i'm not sure. :/ but if its 36, YAY.

they are kids and ure a granny appearing for exams?

 

[heyitsme]

they are kids and ure a granny appearing for exams?

hilarious. you know what i meant, stop trying to be a smartass.

 

[cardude456]

hilarious. you know what i meant, stop trying to be a smartass.

lol.......