#finding validity of this strange binomial expansion

13 messages · Page 1 of 1 (latest)

deep flame
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how do i find the validity

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Please halp guys

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!

fading tendon
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Valid when mod(4x) < 1 and mod(-x) < 1

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So when mod(x) < 1/4 and mod(x) < 1

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So valid when mod(x) is less than 1/4

fallen hazel
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guys can you explain this to me

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why would it not be valid

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It's maths of course it's valid

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x² = 4x+1/-x-1
-x³ - x² = 4x + 1
-x^3 - x^2 - 4x - 1 = 0
x ≈ -0.26

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guys is that what you do