已知实数x,y满足x+y=1,n∈N+,求证x^2n+y^2n≥1/2^(2n-1)

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已知实数x,y满足x+y=1,n∈N+,求证x^2n+y^2n≥1/2^(2n-1)
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已知实数x,y满足x+y=1,n∈N+,求证x^2n+y^2n≥1/2^(2n-1)
已知实数x,y满足x+y=1,n∈N+,求证x^2n+y^2n≥1/2^(2n-1)

已知实数x,y满足x+y=1,n∈N+,求证x^2n+y^2n≥1/2^(2n-1)
x^2n+y^2n≥2*(xy)^n
xy