如果a=2,b=3,c=6,求下列式的值
1..S=a+b+c
++++++++++++++
........a+b+c
2..T=---------
..........a
++++++++++++++
.......a+b+c
3..S=--------
.........abc
++++++++++++++
4..Y=ab+bc
++++++++++++++
......[2c+2a]
5..A=--------
.........2
+++++++++++++
.........(a+b+c)
6..S=-------------
...........abc
help me................................................
2007-01-05 6:24 pm
回答 (2)
2007-01-05 6:32 pm
✔ 最佳答案
a = 2,b = 3,c = 61. S = a + b + c
= 2 + 3 + 6
= 11
2. T = (a + b + c)/a
= 11/2
3. S = (a + b + c)/abc
= 11/[(2)(3)(6)]
= 11/36
4. Y = ab + bc
= (2)(3) + (3)(6)
= 24
5. A = (2c + 2a)/2
= a + c
= 2 + 6
= 8
6. S = (a + b + c)/abc
= 11/[(2)(3)(6)]
= 11/36
2007-01-05 11:49 pm
∵a+b+c
=2+3+6=11
∵abc
=2*3*6
=36
1)S=a+b+c
=11
2)T=(a+b+c)/a
=11/2
3)S=(a+b+c)/abc
=11/36
4)Y=ab+bc
=2*3+3*6
=24
5)A=(2c+2a)/2
=c+a
=8
6)=S=(a+b+c)/abc
=11/36
=2+3+6=11
∵abc
=2*3*6
=36
1)S=a+b+c
=11
2)T=(a+b+c)/a
=11/2
3)S=(a+b+c)/abc
=11/36
4)Y=ab+bc
=2*3+3*6
=24
5)A=(2c+2a)/2
=c+a
=8
6)=S=(a+b+c)/abc
=11/36
參考: ming
收錄日期: 2021-04-12 21:26:00
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https://hk.answers.yahoo.com/question/index?qid=20070105000051KK00700