11. Jika f(x) = 2 – x, g(x) = x² + 4x -5, dan h(x) 3x – 2, nilai (h . g . f)(3) = ….

Jawaban:

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Penjelasan:

begin mathsize 14px style f left parenthesis x right parenthesis equals x squared plus 8 x minus 8 end style dan begin mathsize 14px style g left parenthesis x right parenthesis equals negative 11 x plus 25 end style.

begin mathsize 14px style f plus g left parenthesis x right parenthesis end style = begin mathsize 14px style x squared plus 8 x minus 8 plus open parentheses negative 11 x plus 25 close parentheses end style = begin mathsize 14px style x squared minus 3 x plus 17 end style.

begin mathsize 14px style g minus f left parenthesis x right parenthesis end style =