Proving Increasing Function: f'(x)=f(x) for all x

In summary, an increasing function is a mathematical function where the output values increase as the input values increase. To prove a function is increasing, the derivative must be positive for all values of x. A function cannot be both increasing and decreasing at the same time. Proving an increasing function is important in mathematics as it helps understand the behavior and properties of a function and is used in various real-world applications.
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Homework Statement



Let f : R(real numbers) (arrow) (0,infinity) have the property that f ' (x) = f (x) for all x. Show that f is an increasing functions for all x.

Homework Equations





The Attempt at a Solution



I know that if f ' (x) > 0 , where all of x belongs to a,b (not bounded) then f is strictly increasing on [a,b].

So i need to show that f(x) > 0 maybe?

Any help/guidelines would be much appreciated.
 
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Related to Proving Increasing Function: f'(x)=f(x) for all x

1. What is the definition of an increasing function?

An increasing function is a mathematical function that follows the pattern of increasing values as the input variable increases. This means that as the value of x increases, the value of f(x) also increases.

2. How do you prove that a function is increasing?

To prove that a function is increasing, you must show that the derivative of the function, f'(x), is always greater than or equal to 0 for all values of x. This means that the slope of the function is always positive and the function is always moving upwards.

3. Can a function be increasing for some values of x and decreasing for others?

No, a function cannot be both increasing and decreasing at the same time. It is either increasing for all values of x or decreasing for all values of x.

4. How does proving increasing function relate to the graph of the function?

If a function is increasing, its graph will have a positive slope and the curve will be moving upwards. This can also be seen by examining the values of the function at different points.

5. Why is proving increasing function important in mathematics?

Proving increasing function is important because it allows us to understand the behavior and properties of a function. It is also a fundamental concept in calculus and is used to solve various real-world problems related to rates of change and optimization.

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