Strictly monotonic increasing means that the function is always increasing and never stays the same, while monotonic increasing means that the function is always increasing or staying the same. In other words, a strictly monotonic increasing function will always have a positive slope, while a monotonic increasing function can have a zero slope at certain points. Therefore, strictly monotonic increasing functions are a subset of monotonic increasing functions. **

Monotonic behavior refers to a consistent and unidirectional trend in a set of data or a mathematical function. In a monotonic increasing function, the values consistently increase as the input variable increases. Conversely, in a monotonic decreasing function, the values consistently decrease as the input variable increases. Monotonic behavior is important in various fields such as economics, engineering, and mathematics, as it helps in understanding and predicting the behavior of systems and processes. **

Strictly monotonic decreasing/increasing means that the function is either always decreasing or always increasing, without any flat regions or plateaus. Monotonic decreasing/increasing, on the other hand, allows for flat regions where the function remains constant. In other words, strictly monotonic functions do not have any horizontal sections, while monotonic functions may have horizontal sections. **

Strictly monotonic increasing/decreasing means that the function is either always increasing or always decreasing, without any flat regions or plateaus. Monotonic increasing/decreasing, on the other hand, allows for the possibility of flat regions or plateaus where the function remains constant. In other words, strictly monotonic functions do not have any horizontal sections, while monotonic functions may have some. **

A function is strictly monotonic if it is either strictly increasing or strictly decreasing. This means that for any two points in the function's domain, the function values at those points are either strictly increasing or strictly decreasing. In other words, the function does not have any plateaus or flat regions where the function values remain constant. **

No, not every convergent sequence is monotonic. A convergent sequence is one that approaches a specific limit as the number of terms in the sequence increases. A monotonic sequence, on the other hand, is one that is either always increasing or always decreasing. While some convergent sequences may be monotonic, there are also convergent sequences that oscillate or have a mix of increasing and decreasing terms as they approach their limit. Therefore, not every convergent sequence is monotonic. **

No, a function is not automatically monotonic if there is an extremum or saddle point in the determined monotonic interval. While an extremum or saddle point may indicate a change in the direction of monotonicity, it does not guarantee that the function is strictly monotonic within that interval. It is important to analyze the behavior of the function around the extremum or saddle point to determine the overall monotonicity of the function within the interval. **

To determine the monotonic intervals of a function, you need to analyze the sign of the derivative of the function. If the derivative is positive on an interval, then the function is increasing on that interval. If the derivative is negative on an interval, then the function is decreasing on that interval. By finding the intervals where the derivative is positive or negative, you can determine the monotonic intervals of the function. **