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  1. MustafaMotani

    Mathematics: Post your doubts here!

    ohkay makes my work easy wait ..
  2. MustafaMotani

    Mathematics: Post your doubts here!

    were yu able to do first part .. ?
  3. MustafaMotani

    Mathematics: Post your doubts here!

    this is functions bro .... P(x) = x^2 + 2x +3 P(1) = 1 + 2 + 3 = 6 p(x^2) = (x^2)^2 + 2 (x^2) + 3 now try to do that question hope yu get it . ....
  4. MustafaMotani

    I had to split it up becose Xpc wasnt allowing me to write such a long post

    I had to split it up becose Xpc wasnt allowing me to write such a long post
  5. MustafaMotani

    now there are two possibilities.. either that line is on the plane or NOT on the plane ... just...

    now there are two possibilities.. either that line is on the plane or NOT on the plane ... just take any value of "lambda" and yu shall get the position vector of a random point on the line . substitute that vector in plane equation and if it doesnt satisfy the eq it means its nnot on the plane...
  6. MustafaMotani

    If it equates to zero then it means that line is parallel to plane (angle is 90 b/w normal and...

    If it equates to zero then it means that line is parallel to plane (angle is 90 b/w normal and direction vector) ...
  7. MustafaMotani

    there are multiple ways .... this is how I do : Just dot the direction vector of the line...

    there are multiple ways .... this is how I do : Just dot the direction vector of the line equation with the normal. If it doesnt equate to zero then it means they are intersecting.
  8. MustafaMotani

    Economics: Post your doubts here (O + A level)

    I just want to confirm if my concept is correct or not : If terms of trade has improved then it doesn't necessarily mean that there is Balance of payments surplus B/C 1)-terms of trade is the ratio of (index of exports)/(index of imports) ... which in reality depends on prices ... so if...
  9. MustafaMotani

    Duaa's to Help in Examinations =)

    thanx for the tag.. couldnt have missed it
  10. MustafaMotani

    Mathematics: Post your doubts here!

    I m retiring to ecOnomics ... only subject which gives me tough time ... and Also its just next day after P3... :(
  11. MustafaMotani

    Mathematics: Post your doubts here!

    i have done only part (i) which I think yu must be stuck in ... if you want othrs tell me ... yu should know standard Formulas of S.area and Volume of sphere
  12. MustafaMotani

    Mathematics: Post your doubts here!

    w= -1 + i (on diagram (-1,1)) w^2 = -2i (on diagram (0,-2)) midpoint = ((-1+0)/2, (1-2)/2) (-1/2 , -1/2) = -0.5 -0.5i
  13. MustafaMotani

    Mathematics: Post your doubts here!

    here yu go .. :)
  14. MustafaMotani

    Mathematics: Post your doubts here!

    I am not the ryt guy to do that.. :( I just visualise situations of draw them to understand what is going on in vectors question and then act accordingly..
  15. MustafaMotani

    Mathematics: Post your doubts here!

    yah ..:(
  16. MustafaMotani

    Mathematics: Post your doubts here!

    oh gud.. :)
  17. MustafaMotani

    Mathematics: Post your doubts here!

    I simply dot them .. dat is what yu do .. :)
  18. MustafaMotani

    Mathematics: Post your doubts here!

    its simple OP is actually the normal to the required plane.. coaz it says that AB is on the plane and OP is perpendicular to the plane. simply use r.n = a.n ( take OA or OB in place of a) (x,y,z) x (2/3,5/3,7/3) = (1,2,2) x (2/3,5/3,7/3) 2x + 5y + 7z = 26
  19. MustafaMotani

    Mathematics: Post your doubts here!

    here yu go ..:) u shuld know standard formulas for surface area and volume of spheres.
  20. MustafaMotani

    :D

    :D
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