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  1. C

    Help With A Question (Time Dilation)

    An astronaut set out in a spaceship from Earth orbit to travel to a distant star in our galaxy. The spaceship travelled at a speed of 0.8 c. When the spaceship reached the star, the on-board clock showed the astronaut that the journey took 20 years. An identical clock remained on Earth. What...
  2. C

    Polynomials Question

    Not really sure on how to go about doing this : / Solve the equation 6x4-11x3-26x2+22x+24=0 given that the product of two of the roots is equal to the product of the other two.
  3. C

    Inverse Functions Help Required!

    Find functions which are the inverse of each of the following. State the domain and range of the inverse in each case. 22. f(x)=x^2 + 2x, x≥0
  4. C

    Trigonometric Equations Help

    Really need help with this question! Been at it for a few days and not quite sure how to do it. http://mathurl.com/l4jo8p7.png
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