Let f(x)=x^3-6x^2+15 x+3 . Then, (a) f(x...

Let `f(x)=x^3-6x^2+15 x+3` . Then, (a) `f(x)>0` for all `x in R` (b) `f(x)>f(x+1)` for all `x in R` (c) `f(x)` is invertible (d) `f(x)<0` for all `x in R`

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Let f(x)=x^(3)-6x^(2)+15x+3. Then,(a) f(x)>0 for all x in R( b) f(x)>f(x+1) for all x in R( cl )f(x) is invertible (d) f(x)<0 for all x in R

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