Answer the following questions for the function f(x)=xsqrt(x^2+1) defined on the interval[4,4] Use interval notation . f(x)is concave down on the...

Answer the following questions for the function f(x)=xsqrt(x^2+1)

defined on the interval[−4,4] Use .

A. f(x) is concave down on the interval  B. f(x) is concave up on the interval  C. The inflection point for this function is at  D. The minimum for this function occurs at  E. The maximum for this function occurs at