1.

Let f:R rarr R defined by f(x)=cos^(-1)(-{-x}), where{x} denotes fractional part of x. Then, which of the following is/are correct?

Answer»

f is MANY coe but not even function
Eange of f contains TWO prime numbers
f is a periodic
Graph of f does not lie below x-axis

ANSWER :A::B::D


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