若y/x=9/10,则(1-(y/x))^2011*(x/(y-x))^2012的值是?
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若y/x=9/10,则(1-(y/x))^2011*(x/(y-x))^2012的值是?
若y/x=9/10,则(1-(y/x))^2011*(x/(y-x))^2012的值是?
若y/x=9/10,则(1-(y/x))^2011*(x/(y-x))^2012的值是?
(1-(y/x))^2011*(x/(y-x))^2012
=(1-(y/x))^2011*(1/(y/x-1))^2012
=(1-(y/x))^2011*(1/(1-y/x))^2012
=(1/(1-y/x))=1/(1-9/10))=10
x/(x-y)
10
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