mapping

Let F:R->R be a function such that f(x)=x³-6x²+11x-6.Then f(x) is
a. one-one and into
b. one one onto
c. many one into
d. many one onto

5 Answers

341

Hari Shankar ·2009-06-12 01:40:31

how many real zeroes does f(x) have?

How does f(x) behave as xâ†’âˆž and xâ†’-âˆž?

f'x has real solution

so f is not one one

hence ans is d

sorry q and options hav been altered..

now pls try.

ans is still d

341

Hari Shankar ·2009-06-13 02:29:25

ronald - the reasoning given in posts 2 and 3 is sufficient to asnwer the question. so my request: you please try - and do inform us when u r done

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