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SMK Teknologi dan Rekayasa

Solusi Paket 59 UN 2011 Matematika SMK Teknologi (6)


Himpunan\ penyelesaian\ pertidaksamaan\ \frac{3}{2}(2x+4)\leq 5(x-2)\ adalah\ ....\\A.\ \ \{ x\ |\ x\ \geq 8 \}\\\\B.\ \ \{ x\ |\ x\ \leq 8 \}\\\\C.\ \ \{ x\ |\ x\ \geq 2 \}\\\\D.\ \ \{ x\ |\ x\ \leq 2 \}\\\\E.\ \ \{ x\ |\ x\ \leq -\frac{1}{2} \}
Jawaban: A
\begin{array}{rcl}\frac{3}{2}(2x+4)&\le &5(x-2)\ \ \ \ \ \ \ \ \ \ (tiap\ suku\ dikali\ dengan\ 2)\\\\3(2x+4)&\le &10(x-2)\\\\6x+12&\le &10x-20\\\\6x-10x&\le &-20-12\\\\-4x&\le &-32\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ (dibagi\ -4)\\\\x&\ge &8\end{array}

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One thought on “Solusi Paket 59 UN 2011 Matematika SMK Teknologi (6)

  1. good i like tis anwered

    Posted by ian | 20 April 2011, 10:09 PM

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