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If y = a/(a+b) and x=a/b , what is y in terms of x ?
If y = a/(a+b) and x=a/b , what is y in terms of x ?
admin
2009-05-19
15
问题
If y = a/(a+b) and x=a/b , what is y in terms of x ?
选项
A、-1/x
B、1+x
C、1 + 1/x
D、1/(1+x)
E、x/(1+x)
答案
E
解析
若y=a/(a+b),x=a/b,求y用z来表示的表达式
解:本题的正确答案是(E)。考生在解这类题时不必求出a或b,只需将y化成具有x的形式即可:
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