1.

If [x] is read as the greatest integer less than or equal to x, {x} is the least integer greater than or equal to x. Further f(x,y)=[x]+{y} andg(x,y)=[x]-{y}andP(x,y)=f(x,y)+g(x,y) andQ(x,y)=f(x,y)-g(x,y)If x^2=16 and y^2=25, P (x,y).Q (x,y) is :

Answer»

80
-80
72
none of these

Answer :D


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