Land Productivity Limiting Human Population Thinking about how we get Calories from the land ...
Energy Inputs for Tilling a Hectare of Land Thinking about energy consumption for tilling land
Random Predictions for 2060 Sal's random predictions for the year 2060
2003 AIME II Problem 1 2003 AIME II Problem 1
2003 AIME II Problem 3 2003 AIME II Problem 3
2003 AIME II Problem 4 (part 1) 2003 AIME II Problem 4 (part 1)
Sum of factors of 27000
Sum of factors 2 Seeing the "formula" in the last method
2003 AIME II Problem 5 Volume of a wedge cut from a cylindrical log
2003 AIME II Problem 5 Minor Correction 2003 AIME II Problem 5 Minor Correction
2003 AIME II Problem 6 Finding area of a skewed star
Area Circumradius Formula Proof Proof of the formula relating the area of a triangle to its ...
2003 AIME II Problem 8 Sequence from the product of 2 arithmetic sequences is shown in this ...
Sum of Polynomial Roots (Proof) Sum of Polynomial Roots
Sum of Squares of Polynomial Roots Sum of Squares of Polynomial Roots (Newton Sums)
2003 AIME II Problem 9 Sum of polynomial evaluated at roots of another polynomial
2003 AIME II Problem 12 Minimum members in a committee
2003 AIME II Problem 13 Probability of moving to a vertex
2003 AIME II Problem 10 perfect squares integers square root
2003 AIME II Problem 11.avi A little trigonometry to figure out the area of a triangle
2003 AIME II Problem 14 Trigonometry and geometry to find the area of an equilateral (but not ...
2003 AIME II Problem 15 (part 1) Finding the sum of the absolute value of the imaginary parts ...
2003 AIME II Problem 15 (part 2) Finding the sum of the absolute value of the imaginary parts ...
2003 AIME II Problem 15 (part 3) Finding the sum of the absolute value of the imaginary parts ...