It is said in the mathematics book that the derivative is greater than 0 and the function increases monotonically. I think that no matter what the case is, first the derivative is greater than or equal to 0, and then exclude the case that the derivative is in a section or constant to 0 (when the original function is parallel to the X axis, it is not tenable). Therefore, I think what is said in the book is not accurate,

It is said in the mathematics book that the derivative is greater than 0 and the function increases monotonically. I think that no matter what the case is, first the derivative is greater than or equal to 0, and then exclude the case that the derivative is in a section or constant to 0 (when the original function is parallel to the X axis, it is not tenable). Therefore, I think what is said in the book is not accurate,

Let's give you a proposition: if the derivative of a function is greater than zero in a certain interval, then the function will increase monotonously in this interval. "And another proposition:" if a function is monotonically increasing in a certain interval, then the derivative will be greater than zero in this interval. "Try to judge whether they are true or false