Timeline for Level sets and integral of functions of two variables
Current License: CC BY-SA 3.0
4 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Feb 23, 2016 at 22:36 | vote | accept | A random mathematician | ||
| Feb 23, 2016 at 22:23 | comment | added | Liviu Nicolaescu | According to your question $A(\lambda)$ is an area. Kostya's formula is correct and it is a trick frequently used in probability theory when computing the expectation of a nonnegative random variable $X$, $$E[X]=\int_0^\infty P(X>\lambda)d\lambda.$$ | |
| Feb 23, 2016 at 22:20 | comment | added | Kostya_I | No, $A(\lambda)=Area({x:f(x)>\lambda})$. | |
| Feb 23, 2016 at 20:27 | history | answered | Kostya_I | CC BY-SA 3.0 |