For what values of x is #f(x)= x + 1/x # concave or convex?
1 Answer
Mar 14, 2016
Concave or convex according as x < or > 0.
Explanation:
#(d^2/dx^2)f( x )= 2/x^3 < 0 or > 0 according as x < 0 or > 0..