If y' is positive at a value of x, then y is increasing there. Is the converse true?
120406
$f$ strictly increasing does not imply $f'>0$
121353
If $x$ and $y$ are not both $0$ then $ x^2 +xy +y^2> 0$
55888
Why my differential equations become True?
138544
For which values of $x$, will $f (x) . f '(x) < 0$?
73807
Prove positive definiteness
44799
Why is the even root of a number always positive?
132730
Is there an everywhere discontinuous increasing function?
91131
Question regarding an inequality
145265
A non-zero function satisfying $g(x+y) = g(x)g(y)$ must be positive everywhere
52129
covariance of increasing functions
30082
Using regression to prove that X is a necessary / condition condition for Y
100731
Positive operator has a positive spectrum?
98422
why do we use 'non-increasing' instead of decreasing?
78319
Show that $x \mapsto \frac{f(x)}{x}$ is strictly increasing on (0,1) given that f '(x) is strictly increasing on (0,1) and that f(0)=0
112211
Show an increasing function f from omega_1 to R is eventually constant
13224
Continuous function positive at a point is positive in a neighborhood of that point
104579
Probability of a point taken from a certain normal distribution will be greater than a point taken from another?