13.07.2015 Views

LA PROPAGAZIONE DELL'ERRORE - Circe

LA PROPAGAZIONE DELL'ERRORE - Circe

LA PROPAGAZIONE DELL'ERRORE - Circe

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La propagazione dell’errore 20tSJC c βα∂S∂c∂S= =∂β∂S∂ασ2c1c221c22βsen α ⋅senβc ⋅sencos β ⋅ sen α + β − sen β ⋅ cos α + β⋅senα ⋅2( α + β )( ) ( )(2sen ( α + β )+ ) − ( + )2sen ( α + β )cos α sen α β sen α cos α β⋅ sen β ⋅= 0 σ 0 = 0 2.467⋅10 00 00 0 0.000064 0 0σ2α−100 0 2.467 ⋅10−10622.4598= 276393.2023438853.0504σ 2 S= 94.4560m4σ S= ±9.7188m2S = 331229. 92m ± 9.71m2 2

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