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  1. Suchal Riaz

    Mathematics: Post your doubts here!

    there aint er here either : http://maxpapers.com/category/qualifications/international/cambridge/a-level/a-level-chemistry-9701/ so it implies cie hasn't released any
  2. Suchal Riaz

    Mathematics: Post your doubts here!

    it's called complex for a reason :P :D
  3. Suchal Riaz

    Mathematics: Post your doubts here!

    maxpapers.com or onlineexamhelp.com/past-papers/cambridge-international-a-as-level/9701-chemistry-a-as-level-year-wise/9701-chemistry-a-as-level-2013
  4. Suchal Riaz

    Currently Listening To?

    break ya neck - busta rhymes
  5. Suchal Riaz

    Mathematics: Post your doubts here!

    Einstein took years realising something as simple as relativity. it would have been obvious to me from childhood.
  6. Suchal Riaz

    welcome ;)

    welcome ;)
  7. Suchal Riaz

    Mathematics: Post your doubts here!

    represent it in arg mod form and it becomes 4(cos (2/3 pi) + isin( 2/3 pi) ) giving us square root = 2(cos (2/6 pi) + isin (2/6 pi) )
  8. Suchal Riaz

    Mathematics: Post your doubts here!

    there is only one way that a normal will touch a circle. that is being perpendicular to it. and which means having 180degree with radius. which means making one line which passes through centre.
  9. Suchal Riaz

    Mathematics: Post your doubts here!

    no one told me. i realised this rule just like newton realised the priciple of theorem of calculus.
  10. Suchal Riaz

    SOLVED HARDEST questions for QUICK last day REVISION

    is it wrong? yes i calculated it to be A
  11. Suchal Riaz

    Currently Listening To?

    i am telling you in general. because your location is UAE i thought you wouldn't know urdu. there was/is a member names sweetpie she's from dubai and she doesn't speak urdu.
  12. Suchal Riaz

    Mathematics: Post your doubts here!

    asma tareen
  13. Suchal Riaz

    Mathematics: Post your doubts here!

    √( r( cos(θ)+isin(θ) ) )=±√r(cos(θ/2)+isin(θ/2)).
  14. Suchal Riaz

    Currently Listening To?

    most of the time muslims here assume everyone is muslim and indian and pakistanis here assume that everyone was understand urdu/hindi. i am a pakistani and muslim myself but i don't use other languages here are it is not allowed. when you signed up for this forum there was a 'i agree to the...
  15. Suchal Riaz

    Mathematics: Post your doubts here!

    i didn't solve them. only problems i face are when they ask for the man/min value of the points in locus. and yes i did teach myself everything. from add math in o level to further math in A level.
  16. Suchal Riaz

    Mathematics: Post your doubts here!

    normal ALWAYS passes through the circle. it is a rule. alright?
  17. Suchal Riaz

    Mathematics: Post your doubts here!

    I'm sixteen. i am doing M1 and P1 this year. I taught myself P3 for fun :P
  18. Suchal Riaz

    Mathematics: Post your doubts here!

    it makes sense. if there is a point X and a line AB, the shortest distance will be normal to the line AB. so the shortest distance between circle and the line would be where tangent to the circle is parallel to the half line. so their distance is perpendicular to both half-line and circle. if...
  19. Suchal Riaz

    Mathematics: Post your doubts here!

    i can do most of A2 math. except vectors.
  20. Suchal Riaz

    Mathematics: Post your doubts here!

    well it is difficult to me to grasp this. but i think it's like this: the point on the circle(which will be w for which the |w-z| is least) and it's distance from the half line has to be minimum. lets call the point X. the line X to the half line is the length we want to find. we don't know what...
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