Precalculus crossword

1. The x-values for which f(x)=o
4. f(-x)=-f(x)
10. half of the distance between the minumum and maximum output values of a sine or cosine funtion
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.
13. of two vectors, v = <a,b> and w = <c,d>, is v · w = ac + bd.
17. The # of times a value is the root of a polynomial function
18. The name for the graph of the reciprocal function
19. A graph with no breaks, gaps, or holes
20. a set of coplanar points equidistant from a fixed point called the center.

2. pass through
3. quantity that possesses both magnitude and direction.
5. a+bi
6. the length of a vector;
7. the term that indicates that a periodic function has been translated left or right
8. a matrix that has the same number of rows and columns.
9. ax^2+bx+c
11. ordered list of numbers a1, a2, a3, . . . .
14. the fixed distance between the center of a circle and any point on that circle.
15. the fixed ray in polar coordinates representing the initial side of the angle θ.
16. measures of triangles