Practice problem
If f(x)f(x)f(x) is a convex function, which of the following must also be convex?
2f(x)2f(x)2f(x)
−2f(x)-2f(x)−2f(x)
5f(x)5f(x)5f(x)
−5f(x)-5f(x)−5f(x)
Type a concept, like “slope” or “photosynthesis”.
