CUSAT 2019 BTech Solved Paper

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Question : 53 of 250

Marks: +1, -0

Which of the following functions is not one to one?

f:ℝ→ℝ,f(x)=2x+5
f:[0,τ]→[−1,1],f(x)=cos‌x
f:−π∕2,π∕2→[1,7],f(x)=3sin‌x+4
f:ℝ→[−1,1],‌‌f(x)=sin‌x

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