Precalculus Practice Exam

Part 2 Test 4 Time: 1 hour


  1. Solve for x:

    displaymath78


    Answer: The solution set consists of all x satisfying tex2html_wrap_inline90 , or in interval notation, tex2html_wrap_inline92 .

  2. Define and give a graphical example of the following terms:

  3. Find all the real zeros of the polynomial

    displaymath80


    Answer: The real zeros are x=2, x=1, and tex2html_wrap_inline98 .

  4. Given the function tex2html_wrap_inline100 where a,b,c,d,e and f are integers and a>0,

  5. Given f(x)=(x-1)(x-2)(x+1), find c so that the only real zero of f(x)+c is -2.


    Answer: c=12.

  6. Find a polynomial of degree 10 that has zeros 2-3i,7,8,-4, and 5-i. You do not have to simplify your answer.


    Answer:

    displaymath81


    There many other possible solutions.


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Mon Jun 30 12:52:11 MDT 1997

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