Roboguru

begin mathsize 14px style Diketahui space f left parenthesis x right parenthesis equals fraction numerator 5 minus 4 x over denominator 7 x minus 3 end fraction. space Bila space f to the power of negative 1 end exponent left parenthesis x right parenthesis space adalah space invers space dari space f left parenthesis x right parenthesis comma space maka space f to the power of negative 1 end exponent left parenthesis x right parenthesis equals... end style 

Jawaban:

begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell f left parenthesis x right parenthesis end cell equals cell fraction numerator 5 minus 4 x over denominator 7 x minus 3 end fraction end cell row y equals cell fraction numerator 5 minus 4 x over denominator 7 x minus 3 end fraction end cell row cell 7 x y minus 3 y end cell equals cell 5 minus 4 x end cell row cell 7 x y plus 4 x end cell equals cell 5 minus 3 y end cell row cell open parentheses 7 y plus 4 close parentheses x end cell equals cell 5 minus 3 y end cell row x equals cell fraction numerator 5 minus 3 y over denominator 5 minus 3 y end fraction end cell row blank blank blank row cell Maka space f to the power of negative 1 end exponent left parenthesis x right parenthesis end cell equals cell fraction numerator 5 minus 3 x over denominator 5 minus 3 x end fraction end cell end table end style 

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