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Recent content by ShudyShab

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    Mathematics: Post your doubts here!

    The parametric equations of a curve are x = a cos3 t, y = a sin3 t, where a is a positive constant and 0 < t < 1 2 p. (i) Express dy dx in terms of t. [3] (ii) Show that the equation of the tangent to the curve at the point with parameter t is x sin t + y cos t = a sin t cos t.
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    Mathematics: Post your doubts here!

    Hi Guys. I really need help with this question. I have a question from the P2 and P3 book. Exercise 3C Number 6. Q. How many terms of the geometric series 2+1/3=1/18+1/108+ . . . must be taken for its sum to differ from its sum to infinity by less than 10^-5 . Thanks :)
  3. S

    Mathematics: Post your doubts here!

    Hi Guys. I have a question from the P2 and P3 book. Exercise 3C Number 6. Q. How many terms of the geometric series 2+1/3=1/18+1/108+ . . . must be taken for its sum to differ from its sum to infinity by less than 10^-5 . Thanks :)
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    PHYSICS HELP!!

    Hi please help me out with this CIE paper May/June 2010 Paper 23 Q2c) and Q3c) i) Please Thank You
  5. S

    physics past paper help needed !!

    Hi please help me out with this CIE paper May/June 2010 Paper 23 Q2c) and Q3c) i) Please Thank You
  6. S

    chemistry p22 help!!

    Wow Thank You so much it really did help ,e make sense of the question :) xo
  7. S

    chemistry p22 help!!

    Hi This question from October/November 2010 is something I just can't understand. Q1: Davy and Faraday deduced the formula of A by exploding it with an excess of oxygen and analysing the products of combustion. (b) Complete and balance the following equation for the complete combustion of a...
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    chemistry p22 help!!

    Thank You so Much!! :)
  9. S

    chemistry p22 help!!

    Please help me with this question. it is from May?june 2002 Paper 2 question 4c After each condition explain why this leads to an increased yield of sulphur trioxide. (i) The catalyst needs to be cooled (ii) The air used to burn the sulphur must be as clean as possible
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