If h(x)$ is a function whose domain is [-8,8], and g(x) = f(x^2),then the domain of g(x) is an interval of what width?
Solve this
x^2 = 8
x = sqrt (8) = 2sqrt (2) or x = -sqrt(8) = -2sqrt (2)
The width of the interval is 2sqrt (2) - - 2sqrt (2) = 4sqrt(2)
