Matematika

Pertanyaan

himpunan nilai mutlak fungsi f(x)=|5x-4| untuk -2

1 Jawaban

  • f(x)= |5x-4| untuk -2
    |5x-4| = -2
    <=> (5x-4) = -2
    <=> 5x = -2+4
    <=> 5x = 2
    <=> x = 2/5

    Atau
    |5x-4| = -2
    <=> -|5x-4| = -2
    <=> -(5x-4) = -2
    <=> -5x + 4 = -2
    <=> -5x = -2-4
    <=> -5x = -6
    <=> x = -6/-5
    <=> x= 6/5

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