Prove that 𝑣𝑎𝑟(𝑅_𝑝)=γ€–𝑊_1γ€—^2 𝑣𝑎𝑟𝑅_1+γ€–&#11

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answerhappygod
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Prove that 𝑣𝑎𝑟(𝑅_𝑝)=γ€–𝑊_1γ€—^2 𝑣𝑎𝑟𝑅_1+γ€–&#11

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Prove that π‘£π‘Žπ‘Ÿ(𝑅_𝑝)=γ€–π‘Š_1γ€—^2 π‘£π‘Žπ‘Ÿπ‘…_1+γ€–π‘Š_2γ€—^2 π‘£π‘Žπ‘Ÿπ‘…_2+2π‘Š_1 π‘Š_2
π‘π‘œπ‘£π‘…_1 𝑅_2.
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