In the last three weeks, there has been at least three questions here of the type, "Explain to me how..." or "Help me to understand..." These questions appear to be coming from genuine and sincere, intermediate to advanced level high school or early college students.
On the one hand, I applaud these students' efforts to continue seeking to learn, and pursuing as many avenues as possible in this quest. On the other hand, I doubt whether Math.SE should be one of those avenues. Further, I would have expected such questions to be voted to close as off topic or not constructive, but instead they have several up-votes and one is even on the SE hot questions list.
Optimistically, I would hope that these students have resources such as:
- The textbook
- The teacher/ professor
- Additional resources provided by the teacher/ school
- Peers in the class that study or review together
- On-line resources the students finds on their own (i.e. Khan Academy)
If the student has not already exhausted those resources before posting here, I think we need to first of all tell the student to do so. Not just encourage, demand. If the student has, then what makes anyone think this community is going to succeed in helping the student's comprehension, via a brief static response, where all these others have not?