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    				| 1. | 
                                    If y = mx + c is a normal to the ellipse (x^(2))/(a^(2))+(y^(2))/(b^(2))=1 if C= | 
                            
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Answer»  `(a^(2)-B^(2))/(a^(2)m^(2)+b^(2))`  | 
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