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  1. R

    Questions...

    I get how to do it now ^^ Thanks =D
  2. R

    Questions...

    I dont get this step: \int_{4}^{9}\frac{6}{x^{\frac{3}{2}}}dx \int_{4}^{9}6.x^{\frac{3}{2}}dx
  3. R

    Some preliminary exams

    Thanks^^!!!
  4. R

    Questions...

    1)Find \int_{4}^{9}\frac{6}{x\sqrt{x}}dx Also, if you get a question that asks you to show that ABCD is a parallelogram, do you just need to show that opposite sides are parallel? Or also do you need to show that they are not at right angles or that they are not all equidistant?
  5. R

    Best Chemistry Textbooks/Guides

    Re: Best Chemistry Textbooks/Guides? Can someone add a poll?
  6. R

    Surfing???

    What about the answers? Are they correct? Detailed?
  7. R

    Prelim - Utopia/Dystopia ... Authoritarianism

    Does anyone know whether authoritarianism involves the ownership of private property or is everything owned by the state? Also, is there an emphasis on equality on everyone like communism?
  8. R

    Exponential function

    a)Calculate the area bounded by y=e^x, the coordinate axes and the tangent at x = 2 b) Calculate the area bounded by y=e^x, the Y axis and the line y=e^2
  9. R

    Surfing???

    Anyone have it? Whats good or bad about it?
  10. R

    Why is AC current used in homes and not DC?

    ???
  11. R

    Simpson's rule + Volume of solid

    Use Simpson's rule with five function values to estimate the volume of the solid formed by rotating the curve y=\frac{1}{1+x^2} about the X-axis between x=-2 and x=2
  12. R

    Volume of solids of revolution

    The region bounded by the curve x^{\frac{1}{2}} +y^{\frac{1}{2}} = 2 and the coordinate axes is rotated about the X-axis. Find the volume of the solid generated. Answer is 64pi/15
  13. R

    Area between two curves

    Calculate the area of the region enclosed by the line y = x+1 and the parabola y= x^2/4 - 2
  14. R

    Maximum/Minimum Problems

    Fitz 15e) Q6 A rectangular box whose base is a square is to be made so that its total surface area is constant. Prove that the volume of the box is greatest if the box is a cube.
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