1.
Let f,g:(1,)Rf,g:(1,\infty)\to\mathbb R be defined as f(x)=2x+8f(x)=2x+8 and g(x)=x2g(x)=x^2. If the range of the function fg:[2,4]Rf\circ g:[2,4]\to\mathbb R is [a,b][a,b], then a+ba+b is equal to: