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For real x, let f(x) = x^3 + 5x + 1, then

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For real x, let f(x) = x3 + 5x + 1, then 

(a) f is one-one but not on to R 

(b) f is onto R but not one-one 

(c) f is one-one and onto R 

(d) f is neither one-one nor onto R

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Answer given below:

https://bit.ly/2TL8oIk

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