A. x+2≦y+2
B.x-2≦ y-2
C.-2x≦-2y
D.x/2≦y/2
若x≧y,下列哪項不等式是正確的?求各位幫幫手?
2017-06-04 7:53 pm
回答 (1)
2017-06-04 8:07 pm
Sol
x>=y
x+2>=y+2
(A)錯
x>=y
x－2>=y－2
(B)錯
x>=y
－x<=－y
－2x<=－2y
(C)對
x>=y
x/2>=y/2
(D)錯
x>=y
x+2>=y+2
(A)錯
x>=y
x－2>=y－2
(B)錯
x>=y
－x<=－y
－2x<=－2y
(C)對
x>=y
x/2>=y/2
(D)錯
收錄日期: 2021-04-30 22:25:12
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20170604115325AAzgTAJ