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Question

Prepare for Section 8.6

P1. Find the eccentricity of the graph.

*x** ^{2}*/25 +

*y*

^{2}/16 =1

P2. Find the equation of the directrix.

*y*^{2 }= 4*x*

P3. Solve for *y*.

*y *= 2(1+ *yx*)

P4. Find the smallest value of *x* excluded from the domain.

1+sin *x *= 0

P6. Write in terms of cos *x*.