Quantorium
The Quantorium is meant for asking questions about mathematics or statistics.
The Quantorium expects you to work out the question as much as you can, and indicate where it goes wrong. Below you can see an overview of examples of exercises that are suitable for asking questions about in case you encounter problems:
My regression results come out as insignificant. What should I do? (Add the precise specification of the model you estimated)
In my master thesis I've to optimize a profit function under some constraints. How do I do this? (Add the precise specification of the function to optimize and the constraints)
I would like to test whether the variance of one variable X is larger than that of another variable Y. Which statistical test can I use?
I've this nonlinear equation that I need to solve. How can I do this numerically? (Add the precise equation you're interested in).
A matrix has the property that is invertible and
Determine .
Consider the VDE
Let and , both be solutions of this VDE. Show that
, with and arbitrary scalars, is also a solution of this VDE.
Show by differentiation that is a solution of the homogeneous DL