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1

Somewhere earlier (off screen from what you've shown) you have set $f$ equal to $x$ with a statement like: f=x You can tell this due to the repeating expression: $1.0001[1.0001]$, $1.0002[1.0002]$, etc where it is trying to evaluate $f[x]$. You can fix this with: Clear[f]


0

First, we determine whether the function has a minimum in the allowed region via the first derivative. Simplify[ D[(1 - α2)^2 p^2 (2 p - 1) + α1^2 p (2 α2^2 (1 - p)^2 + p (2 p - 1) + α2 (-1 + 5 p - 4 p^2)) + α1 (-2 p^2 (2 p - 1) + α2^2 p (-1 + 5 p - 4 p^2) + α2 (1 - 7 p^2 + 8 p^3)), #] & /@ {α1, α2, p} ] (* {4 p^3 (-1 + α1) (...



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