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Friday, 13 March 2015

3.2 Homework Due Tue 17th March

To be done in front of books neatly. Show all working out. Marks: 23

Sequence notes

  1. Solve \begin{align*} 3&x+2y=13 \\ -5&x+6y=81 \end{align*}

    [3 marks]

  2. For the sequence -3,2,7,12..., find u_n and u_{50}

    [3 marks]

  3. For the sequence 24,21,18,15..., find u_n and u_{50}

    [3 marks]

  4. True or false, -134 is in the sequence 36,32,28,..... Give a reason for your answer.

    [2 marks]

  5. Write down the first five terms of the sequence u_n=12-5n

    [2 marks]

  6. How many green tiles would there be in pattern 120?

    [2 marks]

  7. Expand (3x+2)(5x-4)

    [2 marks]

  8. Factorise x^2-3x-28

    [2 marks]

  9. Find u_n for -1,2,7,14,23,....

    [2 marks]

  10. Find u_n for 2,16,54,128,250....

    [2 marks]

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