DSE 2010 doubt

[Halflife]

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[AdityaGarg13]

If you take x< y, second function is always increasing as x increases as it becomes 1/2 f(x,x). F(x,x) is increasing function.

If you take x >y, then first term is increasing for increase in x. It becomes f(x,y) - 1/2 f(y,y). But for increase in y we are not sure.


When y increases, second function remains constant. First function can decrease or increase when y increase, as first term and second term both are increasing.

[Halflife]

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