Question: Find the absolute maximum and absolute minimum of \(f\left( x \right)\) on the given closed interval.

(a) \(f\left( x \right)=5+|6-3x|,\,\,\,\left[ 1,5 \right]\)

(b) \(f\left( x \right)=\frac{2x}{{{x}^{2}}+1},\,\,\,\left[ 0,7 \right]\)