Diketahui:

<img align="middle" alt="begin mathsize 14px style f left parenthesis x right parenthesis equals 4 x minus 1
left parenthesis f ring operator g right parenthesis left parenthesis x right parenthesis equals 12 x plus 7 end style" class="Wirisformula" data-mathml="«math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mstyle mathsize=¨14px¨»«mrow»«mi»f«/mi»«mo»(«/mo»«mi»x«/mi»«mo»)«/mo»«mo»=«/mo»«mn»4«/mn»«mi»x«/mi»«mo»-«/mo»«mn»1«/mn»«mspace linebreak=¨newline¨/»«mo»(«/mo»«mi»f«/mi»«mo»§#8728;«/mo»«mi»g«/mi»«mo»)«/mo»«mo»(«/mo»«mi»x«/mi»«mo»)«/mo»«mo»=«/mo»«mn»12«/mn»«mi»x«/mi»«mo»+«/mo»«mn»7«/mn»«/mrow»«/mstyle»«/math»" height="36" role="math" src="data:image/png;base64,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" style="max-width: none; vertical-align: -19px;" width="127" />

Ditanya:&nbsp;<img align="middle" alt="begin mathsize 14px style g left parenthesis x right parenthesis end style" class="Wirisformula" data-mathml="«math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mstyle mathsize=¨14px¨»«mrow»«mi»g«/mi»«mo»(«/mo»«mi»x«/mi»«mo»)«/mo»«/mrow»«/mstyle»«/math»" height="15" role="math" src="data:image/png;base64,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" style="max-width: none; vertical-align: -3px;" width="30" />?

Jawab:

Fungsi komposisi&nbsp;<img align="middle" alt="begin mathsize 14px style left parenthesis f ring operator g right parenthesis left parenthesis x right parenthesis end style" class="Wirisformula" data-mathml="«math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mstyle mathsize=¨14px¨»«mrow»«mo»(«/mo»«mi»f«/mi»«mo»§#8728;«/mo»«mi»g«/mi»«mo»)«/mo»«mo»(«/mo»«mi»x«/mi»«mo»)«/mo»«/mrow»«/mstyle»«/math»" height="15" role="math" src="data:image/png;base64,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" style="max-width: none; vertical-align: -3px;" width="58" />&nbsp;didapat dengan mensubtitusi&nbsp;<img align="middle" alt="undefined" class="Wirisformula" data-mathml="«math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mstyle mathsize=¨14px¨»«mrow»«mi»g«/mi»«mo»(«/mo»«mi»x«/mi»«mo»)«/mo»«/mrow»«/mstyle»«/math»" height="15" role="math" src="data:image/png;base64,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" style="max-width: none; vertical-align: -3px;" width="30" />&nbsp;ke fungsi&nbsp;<img align="middle" alt="begin mathsize 14px style f left parenthesis x right parenthesis end style" class="Wirisformula" data-mathml="«math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mstyle mathsize=¨14px¨»«mrow»«mi»f«/mi»«mo»(«/mo»«mi»x«/mi»«mo»)«/mo»«/mrow»«/mstyle»«/math»" height="15" role="math" src="data:image/png;base64,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" style="max-width: none; vertical-align: -3px;" width="27" />. 
&nbsp;

<img align="middle" alt="begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell left parenthesis f ring operator g right parenthesis left parenthesis x right parenthesis end cell equals cell 12 x plus 7 end cell row cell f left parenthesis g left parenthesis x right parenthesis right parenthesis end cell equals cell 12 x plus 7 end cell row cell 4 left parenthesis g left parenthesis x right parenthesis right parenthesis minus 1 end cell equals cell 12 x plus 7 end cell row cell 4 left parenthesis g left parenthesis x right parenthesis right parenthesis end cell equals cell 12 x plus 8 end cell row cell g left parenthesis x right parenthesis end cell equals cell 3 x plus 2 end cell end table end style" class="Wirisformula" data-mathml="«math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mstyle mathsize=¨14px¨»«mtable columnspacing=¨0px¨ columnalign=¨right center left¨»«mtr»«mtd»«mo»(«/mo»«mi»f«/mi»«mo»§#8728;«/mo»«mi»g«/mi»«mo»)«/mo»«mo»(«/mo»«mi»x«/mi»«mo»)«/mo»«/mtd»«mtd»«mo»=«/mo»«/mtd»«mtd»«mn»12«/mn»«mi»x«/mi»«mo»+«/mo»«mn»7«/mn»«/mtd»«/mtr»«mtr»«mtd»«mi»f«/mi»«mo»(«/mo»«mi»g«/mi»«mo»(«/mo»«mi»x«/mi»«mo»)«/mo»«mo»)«/mo»«/mtd»«mtd»«mo»=«/mo»«/mtd»«mtd»«mn»12«/mn»«mi»x«/mi»«mo»+«/mo»«mn»7«/mn»«/mtd»«/mtr»«mtr»«mtd»«mn»4«/mn»«mo»(«/mo»«mi»g«/mi»«mo»(«/mo»«mi»x«/mi»«mo»)«/mo»«mo»)«/mo»«mo»-«/mo»«mn»1«/mn»«/mtd»«mtd»«mo»=«/mo»«/mtd»«mtd»«mn»12«/mn»«mi»x«/mi»«mo»+«/mo»«mn»7«/mn»«/mtd»«/mtr»«mtr»«mtd»«mn»4«/mn»«mo»(«/mo»«mi»g«/mi»«mo»(«/mo»«mi»x«/mi»«mo»)«/mo»«mo»)«/mo»«/mtd»«mtd»«mo»=«/mo»«/mtd»«mtd»«mn»12«/mn»«mi»x«/mi»«mo»+«/mo»«mn»8«/mn»«/mtd»«/mtr»«mtr»«mtd»«mi»g«/mi»«mo»(«/mo»«mi»x«/mi»«mo»)«/mo»«/mtd»«mtd»«mo»=«/mo»«/mtd»«mtd»«mn»3«/mn»«mi»x«/mi»«mo»+«/mo»«mn»2«/mn»«/mtd»«/mtr»«/mtable»«/mstyle»«/math»" height="99" role="math" src="data:image/png;base64,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" style="max-width: none; vertical-align: -51px;" width="140" /> 
&nbsp;

Jadi, fungsi&nbsp;<img align="middle" alt="begin mathsize 14px style g left parenthesis x right parenthesis equals 3 x plus 2 end style" class="Wirisformula" data-mathml="«math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mstyle mathsize=¨14px¨»«mrow»«mi»g«/mi»«mo»(«/mo»«mi»x«/mi»«mo»)«/mo»«mo»=«/mo»«mn»3«/mn»«mi»x«/mi»«mo»+«/mo»«mn»2«/mn»«/mrow»«/mstyle»«/math»" height="15" role="math" src="data:image/png;base64,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" style="max-width: none; vertical-align: -3px;" width="89" />.

Diketahuisuatu fungsi&nbsp;<img align="middle" alt="begin mathsize 14px style f left parenthesis x right parenthesis equals 4 x minus 1 end style" class="Wirisformula" data-mathml="«math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mstyle mathsize=¨14px¨»«mrow»«mi»f«/mi»«mo»(«/mo»«mi»x«/mi»«mo»)«/mo»«mo»=«/mo»«mn»4«/mn»«mi»x«/mi»«mo»-«/mo»«mn»1«/mn»«/mrow»«/mstyle»«/math»" height="15" role="math" src="data:image/png;base64,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" style="max-width: none; vertical-align: -3px;" width="85" />&nbsp;dan komposisi&nbsp;<img align="middle" alt="begin mathsize 14px style left parenthesis f ring operator g right parenthesis left parenthesis x right parenthesis equals 12 x plus 7 end style" class="Wirisformula" data-mathml="«math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mstyle mathsize=¨14px¨»«mrow»«mo»(«/mo»«mi»f«/mi»«mo»§#8728;«/mo»«mi»g«/mi»«mo»)«/mo»«mo»(«/mo»«mi»x«/mi»«mo»)«/mo»«mo»=«/mo»«mn»12«/mn»«mi»x«/mi»«mo»+«/mo»«mn»7«/mn»«/mrow»«/mstyle»«/math»" height="15" role="math" src="data:image/png;base64,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" style="max-width: none; vertical-align: -3px;" width="126" />. Maka fungsi&nbsp;<img align="middle" alt="begin mathsize 14px style g left parenthesis x right parenthesis equals... end style" class="Wirisformula" data-mathml="«math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mstyle mathsize=¨14px¨»«mrow»«mi»g«/mi»«mo»(«/mo»«mi»x«/mi»«mo»)«/mo»«mo»=«/mo»«mo».«/mo»«mo».«/mo»«mo».«/mo»«/mrow»«/mstyle»«/math»" height="15" role="math" src="data:image/png;base64,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" style="max-width: none; vertical-align: -3px;" width="61" />&nbsp;

matematika

bahasa indonesia

ipa terpadu

fisika

biologi

bahasa inggris

geografi

sosiologi

sejarah

kimia

ekonomi

Diketahuisuatu fungsi dan komposisi . Maka fungsi

Jawaban: