Fit a curve $y=ax+bx_2$ for the data:

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written 7.9 years ago by

• modified 4.1 years ago

x	1	2	3	4	5	6
y	2.51	5.82	9.93	14.84	20.55	27.06

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written 7.9 years ago by

teamques10 ★ 65k

• modified 7.9 years ago

x	$x^2$	$x^3$	$x^4$	y	$xy$	$x^2y$
1	1	1	1	2.51	2.51	2.51
2	4	8	16	5.82	11.64	23.28
3	9	27	81	9.93	29.79	89.37
4	16	64	256	14.84	59.36	237.44
5	25	125	625	20.55	102.75	513.75
6	36	216	1296	27.06	62.36	974.16
$\sum …

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