Question
Thu February 09, 2012 By: Aarushi -

Let R-R be defined as f(x)=|x| and g(x)=x where x denotes the greatest integer less than or equal to x. Find fog(5/2) and gof(-sqroot 2)

Expert Reply
Thu February 09, 2012
f(x) = |x| , g(x) = [x]
fog(5/2) = |[5/2]| = |[2.5]| = |2| = 2
gof(root2) = [|root2|] = [root2] = [1.414] = 1 
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