Question

determine where the function if concave up or concave down

Answer 1

\[\sqrt(x^2+1)\]

Answer 2

i know you need to find the second derivative thats kind of where im hung up

Answer 3

Second derivative is 1\(x^2+1)^3/2

Answer 4

Since the second derivative is always positive, the function is concave upward for all values of x