Which function is concave? a.f(x) = ln x b.f(x) = e-x c.f(x) = ...

[dakota nelson]

Which function is concave?
  a.f(x) = ln x
  b.f(x) = e^-x
  c.f(x) = 2x² - x
  d.f(x) = e^x

Question 2

If f(x) is unimodal then which of the following is NOT a step in the search algorithm used to solve
 

max italicf(x)
  ?

 

  a.Evaluate f(x) at two new points.
  b.Evaluate f(x) at two judiciously chosen points x₁ and x₂.
  c.Determine the relationship between f(x₁) and f(x₂) and find a reduced interval of uncertainty.
  d.Evaluate f(x) at a and b.

[dawsa925]

Answer to Question 1

correct: a

Answer to Question 2

correct: d

[dakota nelson]

Great answer, keep it coming

[upturnedfurball]

Thanks for the timely response, appreciate it