Q.
If the function f:R→R denned by f(x)=[x] where [x] is the greatest integer not exceeding x, for x∈R then f is
2265
180
J & K CETJ & K CET 2007Relations and Functions
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Solution:
We know that, a function is said to be even, if f(−x)=f(x) and odd, if f(−x)=−f(x) and f(x)
is increasing, if f′(x)>0
Here, f(x) is not differentiable at x∈I and above two cases are also not satisfied by f(x) ∴f(x)=[x] is neither even nor odd.