We know that Weierstrass's theorem is relative to continuous functions on compacts. This exercise discards its generalization to normal real numbers For a function f: R-> R we note lI I|R := sup {|f(x)| , x € R} What can be said about two

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We know that Weierstrass's theorem is relative to continuous functions on compacts. This exercise discards
its generalization to normal real numbers
For a function f: R-> R we note ||J |R:= sup {|J(*)|;x € R}. What can be said about two
polynomials P and Q such that || – Ql|R < *. Show that If f: R-> R is the uniform limit of a sequence
of polynomials over normal real numbers, then f is a polynomial. Conclude.
Transcribed Image Text:We know that Weierstrass's theorem is relative to continuous functions on compacts. This exercise discards its generalization to normal real numbers For a function f: R-> R we note ||J |R:= sup {|J(*)|;x € R}. What can be said about two polynomials P and Q such that || – Ql|R < *. Show that If f: R-> R is the uniform limit of a sequence of polynomials over normal real numbers, then f is a polynomial. Conclude.
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