24. 解不等式
,得其解的範圍為何?
答案:登入後查看
統計: A(6), B(8), C(107), D(12), E(0) #624828
統計: A(6), B(8), C(107), D(12), E(0) #624828
詳解 (共 4 筆)
#912402
2/3x+1≦2/9x+1/3
=1≦(2/9x-2/3x)+1/3
=1≦(-4/9x)+1/3
=(1-1/3)≦-4/9x
=2/3≦-4/9x
=x≦(-4/9)/(3/2)
=x≦-3/2
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#1373801
後面不對喔!應該是x≤(-4/9)/(2/3)
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