psyclones Posted March 11, 2018 Share Posted March 11, 2018 (edited) Hi, Can you give me any tips of how to begin this proof using the Fibonacci sequence? Fn-1Fn+1 - Fn2 = (-1)n , where Fibonacci numbers can be calculated by Fn = Fn-1 + Fn-2 If I let n= k+1 then, but Fk Fk+2 - Fk+12 = (-1)k+1 If k = 0 , 0x1 - 12 = -1 (true) , but how do I take it further. Edited March 11, 2018 by psyclones found error in equ Link to comment Share on other sites More sharing options...
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