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Koordinat titik balik grafik fungsi kuadrat adalah...

Koordinat titik balik grafik fungsi kuadrat y equals x squared minus 4 x minus 5 adalah..

  1. (9,2)

  2. (-2,-9)

  3. (-2, 9)

  4. (2, 9)

  5. (2, -9)

Jawaban:

Jawaban C

f left parenthesis x right parenthesis equals fraction numerator a x plus b over denominator c x plus d end fraction comma space x there does not exist space minus d over c rightwards double arrow f to the power of negative 1 end exponent left parenthesis x right parenthesis equals fraction numerator negative d x plus b over denominator c x minus a end fraction comma x there does not exist a over c

Maka,

f left parenthesis x right parenthesis equals fraction numerator x plus 3 over denominator 2 x minus 1 end fraction comma x there does not exist minus 1 half rightwards double arrow f to the power of negative 1 end exponent left parenthesis x right parenthesis equals fraction numerator x plus 3 over denominator 2 x minus 1 end fraction comma x there does not exist a over c

Sehingga,

f to the power of negative 1 end exponent left parenthesis negative 3 right parenthesis equals fraction numerator negative 3 plus 3 over denominator 2 left parenthesis negative 3 right parenthesis minus 1 end fraction equals fraction numerator 0 over denominator negative 7 end fraction equals 0

0

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