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116问答网 > 如果规定三角形表示一种运算符号，且a△b=ab分之a-2b则3△(4△二分之一)=多少 ?

如果规定三角形表示一种运算符号，且a△b=ab分之a-2b则3△(4△二分之一)=多少 ?

2025-03-17 03:33:00

推荐回答（4个）

回答1：

4△2分之1=[4×(2分之1)]分之4-2×(2分之1)=2-1=1

所以3△(4△2分之1)=3△1=(3×1)分之3-2=1-2=-1

回答2：

打不出来
用@表示三角形
a@b=a-2b/ab
3@（4@1/2）=3@【（4-2*1/2）/4*1/2】=3@（3/2）=（3-2*3/2）/3*3/2=0
答案为0

满意请采纳，谢谢~(^_^)Y

回答3：

1

回答4：

0

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