Integration Techniques and L’Hopital’s Rule        
limx→∞√(x+1) - √(x)
Rationalize the numerator
[√(x+1) - √(x)][√(x+1) + √(x)]
√(x+1) + √(x)
 
x + 1 - x
√(x+1) + √(x)
 
Solve the limit
limx→∞ 1
  √(x+1) + √(x)
= 0
 
Study Sheet - Integration Techniques and L’Hopital’s Rule