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Recent content by musiclover gurl

  1. M

    Mathematics: Post your doubts here!

    Well ...I thought of replacing the highest and lowest value of both sin and cos :D
  2. M

    Mathematics: Post your doubts here!

    Never mind....Thank you again for your help! :)
  3. M

    Mathematics: Post your doubts here!

    Thank you so much! :) For the formula, that means I can use any value as an initial value, e.g 3 or 7 or 10? And for the greatest and lowest value, why can't I replace it into the expression 10+(5)^1/2 cos x-sin x itself? Shouldn't it give the same answer?
  4. M

    Mathematics: Post your doubts here!

    Hi...I was working the paper Nov 15 P 23 when I encountered these problems....Can someone help me, please? (Encircled parts are where I have difficulties in doing)
  5. M

    Mathematics: Post your doubts here!

    Thanks :)
  6. M

    Mathematics: Post your doubts here!

    Thank you! :D
  7. M

    Mathematics: Post your doubts here!

    Hi....I need to integrate tan 2x. I'm confused as why i need to convert it to sin 2x/cos 2x first. Can't I just do: (sec^2 2x)/2 + c (The answer is -0.5 ln cos 2x +c) Help please?
  8. M

    Mathematics: Post your doubts here!

    Find the number of different ways in which the 9 letters of the word GREENGAGE can be arranged if exactly two of the Gs are next to each other. [3] (9709 Nov 11 P 62) Help please? I did 8!/3! but apparently this is not the entire answer....
  9. M

    Mathematics: Post your doubts here!

    Show that x^2 - x + 1 and x^2 + x + 1 are positive for all real x. Help please?
  10. M

    Mathematics: Post your doubts here!

    Hi ***amd*** Thanks for replying and yeah its good ! :D
  11. M

    Mathematics: Post your doubts here!

    (x-2)^2 + 3 I am asked to sketch this graph. All that is ok. I found its minimum point and y-intercept and sketched. But what is confusing is that when I equated the equation(that is, y=0) , I got two answers for x. But how is that possible when the minimum point of the graph is (2,3) and it...
  12. M

    Mathematics: Post your doubts here!

    Thanks :)
  13. M

    Mathematics: Post your doubts here!

    Thank you :)
  14. M

    Mathematics: Post your doubts here!

    Given that x^2 + 2x + A is positive for all values of x, find set of values of A. Help please? (This question is not from any past paper, it is from a book.)
  15. M

    Mathematics: Post your doubts here!

    Thank you! :D :) and sorry for the late reply
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