document.write( "Question 1111116: 2,12,36,80,150,? Series comoletion
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Algebra.Com's Answer #726153 by math_helper(2461) $\"\"$ $\"About$

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document.write( "n   a_n      diff     diff_2    diff_3
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document.write( "1   2             
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document.write( "2   12        10
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document.write( "3   36        24       14
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document.write( "4   80        44       20         6   
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document.write( "5   150       70       26         6 \r
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document.write( "Because the differences don't reach a constant for 3 levels, the form will be\r
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document.write( "Using the first four values, you get these 4 equations:
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document.write( "Which results in the following matrix equation:\r
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document.write( "Which can be solved using matrix inversion to find:
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document.write( "Therefore  \r
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document.write( "ЧЧ
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document.write( "Check:
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document.write( " n=1:     (ok)
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document.write( " n=5:    (ok)\r
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document.write( "    \r
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