 
			 
			MCQOPTIONS
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				| 1. | Which of the following equation is true for the hyperbola, where P is on the hyperbola curve, F1, F2 are the two fixed points, the foci, and a is the distance from the vertices of the hyperbola to its center. | 
| A. | PF<sub>1</sub> PF<sub>2</sub> = a | 
| B. | ||PF<sub>2</sub> |-|PF<sub>1</sub>|| = 2a | 
| C. | |PF<sub>1</sub> PF<sub>2</sub> | = 2a | 
| D. | |PF<sub>2</sub> PF<sub>1</sub> | = 2a | 
| Answer» C. |PF<sub>1</sub> PF<sub>2</sub> | = 2a | |