Current location - Training Enrollment Network - Mathematics courses - Polar formal mathematics
Polar formal mathematics
The derivative function of monotonically increasing function is also monotonically increasing function.

The derivative function of monotone decreasing function is also monotone decreasing function.

The derivative function of a monotone function is also a monotone function.

None of these are right. Let this monotonic increase/decrease function be a linear function, let it be: y=kx+b, so y'=k, obviously, this is a constant function, not a monotonic increase/decrease function according to the image.

So the fourth answer is the correct answer of elimination.