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A little twist (Posted on 2016-10-21) Difficulty: 3 of 5
If a, b are the roots of 2x^2 - 5x + 1 = 0 and

S(n) = a^(2n) + b^(2n)

then find the value of (4*S(2017) + S(2015)) / S(2016)

No Solution Yet Submitted by Danish Ahmed Khan    
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Some Thoughts re: computer solution.....yes,but... | Comment 2 of 4 |
(In reply to computer solution by Charlie)


..."= 21 for any k, even zero or negative.

...it might be true, but the text does not define S(x) for non-positive values of x thus precluding recursive evaluation of fns(x).




  Posted by Ady TZIDON on 2016-10-21 23:46:36
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