• We need your support!

    We are currently struggling to cover the operational costs of Xtremepapers, as a result we might have to shut this website down. Please donate if we have helped you and help make a difference in other students' lives!
    Click here to Donate Now (View Announcement)

Search results

  1. Suchal Riaz

    Maths, Addmaths and Statistics: Post your doubts here!

    i got exactly same answer when i solved it. probably we both cant be wrong.
  2. Suchal Riaz

    Biology; Chemistry; Physics: Post your doubts here!

    obviously
  3. Suchal Riaz

    Maths, Addmaths and Statistics: Post your doubts here!

    winter 2011 in this thread go to the link of o levels then find the examiner reports there
  4. Suchal Riaz

    Biology; Chemistry; Physics: Post your doubts here!

    the more the difference in temperature between two things the faster the heat transfers, so more heat will transfer to room.
  5. Suchal Riaz

    Biology; Chemistry; Physics: Post your doubts here!

    no
  6. Suchal Riaz

    Biology; Chemistry; Physics: Post your doubts here!

    circles are buzzing around my head from the time i look to them, i dont know where it starts...o_O
  7. Suchal Riaz

    Biology; Chemistry; Physics: Post your doubts here!

    thnx. hope fancy things dont come in exams
  8. Suchal Riaz

    Biology; Chemistry; Physics: Post your doubts here!

    i was thinking that maybe answer is zero but i was reluctant to say it. it means that as plank is just about to tip, it puts no force on B therefore according to 3rd law there is not force by B upwards. it depends on at what time u see. if u see when it is still resting it will be i guess half...
  9. Suchal Riaz

    Biology; Chemistry; Physics: Post your doubts here!

    (f) i m not fully sure but what i think is that when plank has not yet tipped, the force on b will be sum of weight divided by 2 as for one object to be in equilibrum the resultant force and moment must be the same. as plank will tip the moment have anticlockwise resultant from A as pivot but...
  10. Suchal Riaz

    Biology; Chemistry; Physics: Post your doubts here!

    why i cant find it in book? where can i read about them. ur explanation does not make sense to me :p
  11. Suchal Riaz

    Maths, Addmaths and Statistics: Post your doubts here!

    the bearing is 315, so anticlockwise angle between north and boat is 45, if we extend north and liner's direction it is 90deg liner is going 090 deg(east). one angle is 90 and other is 45 so the third has to be 45 as well.
  12. Suchal Riaz

    Maths, Addmaths and Statistics: Post your doubts here!

    i did it geometrically, but with vecor way answer is same:
  13. Suchal Riaz

    Maths, Addmaths and Statistics: Post your doubts here!

    i read examiner report of part (a) of same question so i thought that it is about part (b) i have confessed my mistake still if u want to give me saza-e-moot then i am ready :p
  14. Suchal Riaz

    Maths, Addmaths and Statistics: Post your doubts here!

    1- fails: 0.1 passes: 0.9 fail then pass, so 0.1*0.9=0.09 2-passes in first: 0.9 passes in second attempt: 0.09 0.9+0.09=0.99 3-0.1*0.1*0.1=0.001 4- i think shorter way will be 1-0.001=0.999 try taking all posinilities maybe i m wrong b) 1- 0.1n 2- =1-(0.1)^n
  15. Suchal Riaz

    Maths, Addmaths and Statistics: Post your doubts here!

    if we add 7 inside integral and divide by 7 outside integral we get derivative of 7 outside. by reverse if u do whole substitution in head, 7*dx=du where u=(7x+8) so integral becomes 1/7 integral(u^1/3)du add power and divide u get 1/7*4/3(7x+4)^3/4 same result got in head with some reason why...
  16. Suchal Riaz

    Maths, Addmaths and Statistics: Post your doubts here!

    nobody is talking about integration by parts! why don't u understand that the way u r doing is the same as substitution but u don't know that the reason u divide by 7 is to make the derivative of inner function a multiple of it so we can treat is like a variable. because it is shorter way of...
  17. Suchal Riaz

    Maths, Addmaths and Statistics: Post your doubts here!

    obviously i have done these kinds of them many time when the last part has a derivative for a function and we have to add some constant to make it like that derivative so it's integral is that function. i won't do integration by parts as it is trickier.
  18. Suchal Riaz

    Maths, Addmaths and Statistics: Post your doubts here!

    the rule which allows you to take a function as a single variable is derived from u-substitution. and by substitution it is simpler and can be done in mind. examiner report states that "Those candidates who realised the need for substitution found this an easy mark."
  19. Suchal Riaz

    Maths, Addmaths and Statistics: Post your doubts here!

    there is no paper three for add maths :eek:
  20. Suchal Riaz

    Physics Help.. Again.

    thats better ;) i always face difference between cie and school's opinions. but i always read examiner reports and markscheme and follow them over school
Top