proof of Bernoulli’s inequality
Let be the interval and the function defined as:
with fixed.Then is differentiable and its derivative
is
from which it follows that .
- 1.
If then for all and for all which means that is aglobal maximum
point for .Therefore for all which means that for all .
- 2.
If then for all and for all meaning that is a globalminimum point for .This implies that for all which means that for all .
Checking that the equality is satisfied for or for ends the proof.