text: Thursday
  May 5, 2016
  
  # Homework Help: calculus
  
  Posted by kim on Saturday, October 3, 2009 at 9:54pm.
  
  evaluate if possible the function at the given values(s) of the independent variable. Simplify the results.
  
  f(x)= square root x+5
  (a) f(-4)
  (b) f(11)
  (c) f(-8)
  (d) f(x+deltax)
  • calculus - drwls, Sunday, October 4, 2009 at 7:44am
  
  Is f(x) sqrt(x+5) or (sqrtx) +5?
  
  I think they mean sqrt (x+5), because is gives integer answers in some cases.
  
  You can't take a square root of a negaive number.
  
  Just plug in the indicated number for x and perform the calculation.
  
  For (b), if x=11, then x + 5 = 15 and sqrt 16 = 4. They probably only want the positive square root.
  
  I would just leave (d) as
  sqrt (x + 5 + delta x)