11,114 reputation
2529
bio website
location
age
visits member for 1 year, 9 months
seen 18 hours ago

University of Florence


19h
comment Find absolute maximum and minimum with domain
@MartinSleziak sorry it was a typo. No tagging intended.
1d
revised Determinant value of $2 \times 2$ matrices
added 78 characters in body
1d
revised Determinant value of $2 \times 2$ matrices
added 78 characters in body
1d
revised Determinant value of $2 \times 2$ matrices
added 10 characters in body
1d
answered Determinant value of $2 \times 2$ matrices
1d
comment There are 10 sticks of length 1,..,10. How many triangles can be formed
Can triangles overlap each other? Do the intersections of sticks count as vertices?
1d
comment There are 10 sticks of length 1,..,10. How many triangles can be formed
I cannot get more than 4, and for 4 only 9 sticks are enough.
1d
revised Dividing by 2 numbers at once, what is the answer?
added 4 characters in body
1d
revised Dividing by 2 numbers at once, what is the answer?
added 246 characters in body
1d
revised Dividing by 2 numbers at once, what is the answer?
added 246 characters in body
1d
revised Dividing by 2 numbers at once, what is the answer?
added 246 characters in body
1d
answered Dividing by 2 numbers at once, what is the answer?
1d
comment Dividing by 2 numbers at once, what is the answer?
While sums and moltiplications associate on the left, it is a good convention that powers associate to the right: A^B^C = A^(B^C). This because $(A^B)^C$ can be written anyway without parenthesis as $A^{BC}$. Python (and maybe other programming languages) agrees with this convention.
2d
answered Find absolute maximum and minimum with domain
2d
revised Find absolute maximum and minimum with domain
revert and correct previous fix
Oct
20
answered Definite method for finding the intersection of two cartesian lines in 3D.
Oct
20
answered What does the nullity of T have to do with if it's isomorphic or not?
Oct
20
revised Can a convex polygon inside a square with edge length 1 have a perimeter > 4?
added 11 characters in body
Oct
14
comment Is value of $\pi = 4$?
I don't think this answers the question. The OP has correctly computed the length of the staircase and, apparently, he knows that $\pi \neq 4$. So he knows the reasoning is wrong (or at least contradictory) but he is asking which step fails.
Oct
11
revised In high school statistics, why does it seem like equations come out of the sky
added 9 characters in body