R²=18.51²+(R-7.23)²,最好具体
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R²=18.51²+(R-7.23)²,最好具体
R²=18.51²+(R-7.23)²,
最好具体
R²=18.51²+(R-7.23)²,最好具体
R^2=342.6201+R^2+7.23^2-2x7.23R
52.2729R=-328.1601
R=-328.1601÷52.2728=-6.2750876