- #1
hedipaldi
- 210
- 0
Homework Statement
prove that the sequence (1+1/n)^(n+1) is monotonic decreasing
Homework Equations
The Attempt at a Solution
I tried to use the binom expansion and the identity( Ck-1,n)+(Ck,n)=(Ck,n+1)
hedipaldi said:If someone has an idea i will be glad to be helped.
hedipaldi said:Up to now nothing works here.
hedipaldi said:Try to solve and see the problem for yourself.This is not so easy as the increasing sequence in answer #9.
hedipaldi said:I need a solution without using functions and derivatives.I tried the binom expansion,the Bernouli inequality and more.the binom expansion may by efficient but i suspect that there must be a simpler way.
Proving monotonicity means showing that a mathematical function is either always increasing or always decreasing.
Proving monotonicity is important because it helps us understand the behavior of a function and make predictions about its values. It also allows us to determine the maximum and minimum values of a function.
To prove that (1 + 1/n)^(n+1) is decreasing, we can take the derivative of the function and show that it is always negative. This shows that the function is always decreasing and therefore, monotonic.
One example of a monotonic function is f(x) = x + 2. This function is always increasing, as the value of x increases, so does the value of f(x).
Proving monotonicity can be used in real-world applications such as economics, where it can help analyze the demand and supply curves. It can also be used in engineering to understand the behavior of systems and make predictions about their performance.