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85.Let f ((x+y)÷ 2)=(f (x)+f (y))÷ 2 for all real x and y. If f'(0)=-1. F (0)=1. Find f (2). |
| Answer» 85.Let f ((x+y)÷ 2)=(f (x)+f (y))÷ 2 for all real x and y. If f'(0)=-1. F (0)=1. Find f (2). | |