Precalculus crossword

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Across
  1. 1. The x-values for which f(x)=o
  2. 4. f(-x)=-f(x)
  3. 10. half of the distance between the minumum and maximum output values of a sine or cosine funtion
  4. 12. the fixed line used to define a parabola; all points on the parabola must be the same distance from the directrix as they are from the parabola's focus.
  5. 13. of two vectors, v = <a,b> and w = <c,d>, is v · w = ac + bd.
  6. 17. The # of times a value is the root of a polynomial function
  7. 18. The name for the graph of the reciprocal function
  8. 19. A graph with no breaks, gaps, or holes
  9. 20. a set of coplanar points equidistant from a fixed point called the center.
Down
  1. 2. pass through
  2. 3. quantity that possesses both magnitude and direction.
  3. 5. a+bi
  4. 6. the length of a vector;
  5. 7. the term that indicates that a periodic function has been translated left or right
  6. 8. a matrix that has the same number of rows and columns.
  7. 9. ax^2+bx+c
  8. 11. ordered list of numbers a1, a2, a3, . . . .
  9. 14. the fixed distance between the center of a circle and any point on that circle.
  10. 15. the fixed ray in polar coordinates representing the initial side of the angle θ.
  11. 16. measures of triangles