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  1. sky_angel

    Integration help againn

    I graphed it and I got two triangles. But I still don't get how you get negative area... it just doesn't make sense.... that's like me saying that there's a negative distance or a negative time.
  2. sky_angel

    Integration help againn

    Why from -1 to 0 gives negative area :S, like why not from 0 to 1 or something? Is it because the limit is minus, so the area is minus?
  3. sky_angel

    Integration help againn

    thankss :3 but i dont understand the negative area part. how can you have negative area?
  4. sky_angel

    Integration help againn

    woopsss i meant from -1 to 1. The thing is, for one section of the homework I kept getting it right. Now this section I'm getting them ALL wrong
  5. sky_angel

    Integration help againn

    I'm trying to finish off Maths hw now because my teacher is checking tomorrow, and I totally forgot about it :( Can you help me with a few questions? I keep getting the answer wrong but I double checked my answer like a millionnn times but I still keep getting it wrong! Like, even the easiest...
  6. sky_angel

    Integration HELPP!!

    Oh okay.... I read it but I didn't understand anything. thanks anywayyy :3 ill ask my teacher tomorrow to explain why, maybe he will know.
  7. sky_angel

    Integration HELPP!!

    no, but he did tell us to put a dx in the end because you lose marks if you don't
  8. sky_angel

    Integration HELPP!!

    no... he just told us that we have to find something that if we differentiate, we get the original curve so like the 'opposite' of differentiation. But I don't get why that suddenly gives the area under the curve...
  9. sky_angel

    Integration HELPP!!

    but isn't the radius 1 here, so its just pi/2?
  10. sky_angel

    Integration HELPP!!

    thankss!!! <3 but I don't get why integration finds the area under the curve. Like, how come doing the 'opposite' of differentiation gives us the area? I know that differentiation gives you the gradient but how come if I do it the other way around, I suddenly get area??
  11. sky_angel

    Integration HELPP!!

    So can we just use the area of a circle formula? so the area is just pi/2?
  12. sky_angel

    Integration HELPP!!

    oooooohhhhhhhh i remember the teacher told us that we use integration to find the area under the curve. is this curve a circle???
  13. sky_angel

    Integration HELPP!!

    We're doing integration now at school and our teacher gave us a question that I can't get. He asked us to integrate y= root (1-x^2) from -1 to 1. How do I do thisss because he only taught us how to integrate things like 3x^2 or (1+3x)^2. I asked him if the integral was like the normal one...
  14. sky_angel

    Do you regret any subjects that you did?

    I did Chemistry at the beginning of Year 11 because all my friend said I should. I don't really regret it because I dropped it anyway, but stilll :p
  15. sky_angel

    Drop extension math?

    I'm in a situation like yours. I would keep it just in case things improve next year :3
  16. sky_angel

    The University of Sydney Open Day - 25 August

    Isn't it rude to just leave in the middle of a lecture? I would feel so badd
  17. sky_angel

    Is love necessary in life?

    There are so many different types of love :)
  18. sky_angel

    HSC 2012-14 MX2 Integration Marathon (archive)

    Re: MX2 Integration Marathon I don't get anything in this threadddd
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