Diketahui:&nbsp;<img align="middle" alt="begin mathsize 14px style U subscript n equals 2 open parentheses n minus 1 close parentheses end style" class="Wirisformula" data-mathml="«math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mstyle mathsize=¨14px¨»«mrow»«msub»«mi»U«/mi»«mi»n«/mi»«/msub»«mo»=«/mo»«mn»2«/mn»«mfenced»«mrow»«mi»n«/mi»«mo»-«/mo»«mn»1«/mn»«/mrow»«/mfenced»«/mrow»«/mstyle»«/math»" height="17" role="math" src="data:image/png;base64,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" style="max-width: none; vertical-align: -5px;" width="86" />

Perhatikan perhitungan berikut!

<img align="middle" alt="begin mathsize 14px style U subscript 1 equals 2 left parenthesis 1 minus 1 right parenthesis equals 2 times 0 equals 0
U subscript 2 equals 2 left parenthesis 2 minus 1 right parenthesis equals 2 times 1 equals 2
U subscript 3 equals 2 left parenthesis 3 minus 1 right parenthesis equals 2 times 2 equals 4
U subscript 4 equals 2 left parenthesis 4 minus 1 right parenthesis equals 2 times 3 equals 6
U subscript 5 equals 2 left parenthesis 5 minus 1 right parenthesis equals 2 times 4 equals 8
U subscript 6 equals 2 left parenthesis 6 minus 1 right parenthesis equals 2 times 5 equals 10 end style" class="Wirisformula" data-mathml="«math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mstyle mathsize=¨14px¨»«mrow»«msub»«mi»U«/mi»«mn»1«/mn»«/msub»«mo»=«/mo»«mn»2«/mn»«mo»(«/mo»«mn»1«/mn»«mo»-«/mo»«mn»1«/mn»«mo»)«/mo»«mo»=«/mo»«mn»2«/mn»«mo»§#183;«/mo»«mn»0«/mn»«mo»=«/mo»«mn»0«/mn»«mspace linebreak=¨newline¨/»«msub»«mi»U«/mi»«mn»2«/mn»«/msub»«mo»=«/mo»«mn»2«/mn»«mo»(«/mo»«mn»2«/mn»«mo»-«/mo»«mn»1«/mn»«mo»)«/mo»«mo»=«/mo»«mn»2«/mn»«mo»§#183;«/mo»«mn»1«/mn»«mo»=«/mo»«mn»2«/mn»«mspace linebreak=¨newline¨/»«msub»«mi»U«/mi»«mn»3«/mn»«/msub»«mo»=«/mo»«mn»2«/mn»«mo»(«/mo»«mn»3«/mn»«mo»-«/mo»«mn»1«/mn»«mo»)«/mo»«mo»=«/mo»«mn»2«/mn»«mo»§#183;«/mo»«mn»2«/mn»«mo»=«/mo»«mn»4«/mn»«mspace linebreak=¨newline¨/»«msub»«mi»U«/mi»«mn»4«/mn»«/msub»«mo»=«/mo»«mn»2«/mn»«mo»(«/mo»«mn»4«/mn»«mo»-«/mo»«mn»1«/mn»«mo»)«/mo»«mo»=«/mo»«mn»2«/mn»«mo»§#183;«/mo»«mn»3«/mn»«mo»=«/mo»«mn»6«/mn»«mspace linebreak=¨newline¨/»«msub»«mi»U«/mi»«mn»5«/mn»«/msub»«mo»=«/mo»«mn»2«/mn»«mo»(«/mo»«mn»5«/mn»«mo»-«/mo»«mn»1«/mn»«mo»)«/mo»«mo»=«/mo»«mn»2«/mn»«mo»§#183;«/mo»«mn»4«/mn»«mo»=«/mo»«mn»8«/mn»«mspace linebreak=¨newline¨/»«msub»«mi»U«/mi»«mn»6«/mn»«/msub»«mo»=«/mo»«mn»2«/mn»«mo»(«/mo»«mn»6«/mn»«mo»-«/mo»«mn»1«/mn»«mo»)«/mo»«mo»=«/mo»«mn»2«/mn»«mo»§#183;«/mo»«mn»5«/mn»«mo»=«/mo»«mn»10«/mn»«/mrow»«/mstyle»«/math»" height="142" role="math" src="data:image/png;base64,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" style="max-width: none; vertical-align: -71px;" width="160" />&nbsp;

Jadi, enam suku pertama barisan adalah&nbsp;<img align="middle" alt="begin mathsize 14px style 0 comma space 2 comma space 4 comma space 6 comma space 8 comma space 10 end style" class="Wirisformula" data-mathml="«math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mstyle mathsize=¨14px¨»«mrow»«mn»0«/mn»«mo»,«/mo»«mo»§#160;«/mo»«mn»2«/mn»«mo»,«/mo»«mo»§#160;«/mo»«mn»4«/mn»«mo»,«/mo»«mo»§#160;«/mo»«mn»6«/mn»«mo»,«/mo»«mo»§#160;«/mo»«mn»8«/mn»«mo»,«/mo»«mo»§#160;«/mo»«mn»10«/mn»«/mrow»«/mstyle»«/math»" height="12" role="math" src="data:image/png;base64,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" style="max-width: none; vertical-align: -2px;" width="103" />.

Tulislah 6 suku pertama barisan-barisan dengan rumus sukunya!

<img align="middle" alt="begin mathsize 14px style U subscript n equals 2 open parentheses n minus 1 close parentheses end style" class="Wirisformula" data-mathml="«math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mstyle mathsize=¨14px¨»«mrow»«msub»«mi»U«/mi»«mi»n«/mi»«/msub»«mo»=«/mo»«mn»2«/mn»«mfenced»«mrow»«mi»n«/mi»«mo»-«/mo»«mn»1«/mn»«/mrow»«/mfenced»«/mrow»«/mstyle»«/math»" height="17" role="math" src="data:image/png;base64,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" style="max-width: none; vertical-align: -5px;" width="86" />&nbsp;

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Tulislah 6 suku pertama barisan-barisan dengan rumus sukunya!

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