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  1. I

    Toughest Math P3 doubts! Here.

    can you please show me the solution?
  2. I

    Toughest Math P3 doubts! Here.

    you know to solve quadratic (x^2 +bx +c) by completing the square, it's (x +b/2)^2 that simply gives us [x+(-tanx)]^2 or (x-tanx)^2 isn't it?
  3. I

    Toughest Math P3 doubts! Here.

    Got it but I'm getting [x+(-tanx)]^2 that means a =1 but b=-1 are you getting the same?
  4. I

    Toughest Math P3 doubts! Here.

    Got it but I'm getting [x+(-tanx)]^2 that means a =1 but b=-1 are you getting the same?
  5. I

    Toughest Math P3 doubts! Here.

    I can't seem to proceed after taking the derivative which is : -2tanx(e^-2x) + (sec^2)x (e^-2x)
  6. I

    Toughest Math P3 doubts! Here.

    I have solved topical past papers by Redspot though I'm recommended never to use them... so I've stopped using them now. Unsolved papers and markschemes is the best way if you want an A solved papers are for average students only, and they will get you no more than Bs
  7. I

    Toughest Math P3 doubts! Here.

  8. I

    Toughest Math P3 doubts! Here.

    Since it's a rectangular base, base area is square, and we are given that each side measures 1 m the formula for area of square is x^2, (that's where the square comes from) so 1m^2 is the base area
  9. I

    Toughest Math P3 doubts! Here.

    you know area of square is 1m x 1m, so 1 m^2, right?
  10. I

    Toughest Math P3 doubts! Here.

    Thought blocker are you taking A2 Maths this session too?
  11. I

    Toughest Math P3 doubts! Here.

    1 m =100 cm 1m^2 = 100 x 100 cm^2
  12. I

    Toughest Math P3 doubts! Here.

    input-output you can also take it as combining two equations that we had for dh/dt You know it's the same method that they do like dv/dt =dv/dh x dh/dt, only that we did it with understanding instead of using formula
  13. I

    Toughest Math P3 doubts! Here.

    we are given rate of change of volume and base area is 1 m^2 or 10000 cm^2 we know that base area x height is volume so base area x rate of change of height(dh/dt) will be rate of change of volume (dv/dt) since we have dv/dt and we want rate of change of height, rate of change of height = rate...
  14. I

    Toughest Math P3 doubts! Here.

  15. I

    Toughest Math P3 doubts! Here.

    wait, I'll solve it
  16. I

    but the *hearts actually xD

    but the *hearts actually xD
    • I Believe
    • Profile post comment
  17. I

    Mathematics: Post your doubts here!

    what's the answer for 6 (i)?
  18. I

    Mathematics: Post your doubts here!

    part(i) solution please
  19. I

    call me believer :p

    call me believer :p
  20. I

    Physics: Post your doubts here!

    yep can you explain how? I thought it was B because Y is the vertical component (Fsinθ ) and X is the horizontal component (Fcosθ) so a larger value of θ gets us a larger value of cosθ and larger value of θ results in smaller value of sinθ, isn't it?
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