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 Feb 4 revised How to prove that $k^3+3k^2+2k$ is always divisible by $3$? typos Feb 4 revised How to prove that $k^3+3k^2+2k$ is always divisible by $3$? adding a tag Jan 27 revised $x=2t^3-9t^2+12t+6$ where $x$ is the position of a body at anytime $t$. articles Jan 19 revised How to write a definition of less than $<$? typo Jan 19 revised How to write a definition of less than $<$? added 232 characters in body Jan 17 revised How to find the length of a line in a tetrahedron latax; missing brace added Jan 15 revised Find the number of bicycles and tricycles edited title Jan 13 revised Congruences and prime numbers formulas to latex Jan 11 revised if the inverse images of all closed balls are closed, is $f$ continuous? a typo in formula Jan 8 revised Relation between ranks of submatrices of a matrix. format with latext Jan 5 revised Prove that if Triangles ABC = DEF in a metric geometry, then line AB contains exactly two of the points D, E, and F. latex, overleftrightarrow Jan 4 revised Prove that if Triangles ABC = DEF in a metric geometry, then line AB contains exactly two of the points D, E, and F. latex Jan 4 revised Prove that $f(x,y)=g(x+y,xy)$. typo Jan 1 revised Shortest distance to a straight line link to construction Dec 31 revised Reverse Functions format Dec 29 revised Max perpendicular distance between line and parabola display picture in post Dec 29 revised Find the area of a triangle if its two sides measure $6 in.$ and $9 in.$, and the bisector of the angle between the sides is $4\sqrt{3}$ in. removed unit from latex Dec 16 revised Go from A to D in three equal steps added discriminant Dec 16 revised Go from A to D in three equal steps added the equation Dec 16 revised Go from A to D in three equal steps typo