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Mathematics

9th

grade

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Sketsa Grafik Fungsi Kuadrat

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Jajang Thea

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19 questions

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  • 1. Multiple Choice
    30 seconds
    1 pt

    Berikut merupakan fungsi kuadrat, kecuali ... .

    f(x)=3x2−6x+9f\left(x\right)=3x^2-6x+9

    f(x)=(x−1)2+4f\left(x\right)=\left(x-1\right)^2+4

    f(x)=(2x2−2)(x2−13)f\left(x\right)=\left(2x^2-2\right)\left(x^2-13\right)

    f(x)=(x+6)(x+9)f\left(x\right)=\left(x+6\right)\left(x+9\right)

  • 2. Multiple Choice
    30 seconds
    1 pt
    Image

    Titik potong dengan sumbu x grafik fungsi kuadrat pada gambar di samping adalah …

    (-1, 0) dan (2 , 0)

    (-1 ,0) dan ( 3, 0)

    (0, -1 ) dan (0,2 )

    (0, -1 ) dan (0, 3 )

    (-1 ,1) dan ( 3, 1)

  • 3. Multiple Choice
    30 seconds
    1 pt

    Fungsi  f(x)=ax2+bx+cf\left(x\right)=ax^2+bx+c  memiliki nilai optimum ....

     y=−b2+4ac2ay=-\frac{b^2+4ac}{2a}  

     y=−b2+4ac4ay=-\frac{b^2+4ac}{4a} 

     y=−b2−4ac2ay=-\frac{b^2-4ac}{2a} 

     y=−b2−4ac4ay=-\frac{b^2-4ac}{4a} 

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