Matematika

Pertanyaan

A. |3-2x|≥4
B.|3x+2|<5

1 Jawaban

  • A.
    | 3 - 2x | >= 4

    3 - 2x >= 4
    -2x >= 1
    x <= -1/2

    3 - 2x <= -4
    -2x <= -7
    x >= 7/2

    Hp = {x <= -1/2 atau x >= 7/2}

    B.
    | 3x + 2 | < 5

    -5 < 3x + 2 < 5
    -5 - 2 < 3x < 5 - 2
    -7 < 3x < 3
    -7/3 < x < 1

    Hp = {-7/3 < x < 1}

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