8:27 Cambridge Interview! Write sqrt(3-2sqrt(2)) in the form a+b sqrt(c)... Think Thrice Problem Solving 61 views - 1 year ago
6:07 Basketball Math??? Will the shooter have to hit exactly 75% of his shots? Think Thrice Problem Solving 304 views - 1 year ago
3:59 MIT Integration Bee! x^3e^(x^2). Solve this fun integral! Think Thrice Problem Solving 607 views - 2 years ago
7:43 MIT Integration Bee! arcsin(cos(x)). Solve this fun integral! Think Thrice Problem Solving 501 views - 2 years ago
5:23 MIT Integration Bee! 1/(1+sin(x)) Solve this fun integral! Think Thrice Problem Solving 2.7K views - 2 years ago
4:19 MIT Integration Bee! 1/(sqrt(x)(sqrt[4](x)+1)^10). Solve this fun integral! Think Thrice Problem Solving 430 views - 2 years ago
10:28 MIT Integration Bee! x^9/(x^20-48x^10+575). Solve this fun integral! Think Thrice Problem Solving 2K views - 2 years ago
8:12 Geometry! What is the value of x with these three squares in an equilateral triangle??? Think Thrice Problem Solving 556 views - 2 years ago
19:26 Geometry! What is the area of the gold region with these two circles inscribed in a rectangle?? Think Thrice Problem Solving 465 views - 2 years ago
8:06 Sqrt(x)+sqrt(y)=sqrt(2009); can we calculate y and x?!? Think Thrice Problem Solving 710 views - 2 years ago
11:25 Solve a really cool limit using the definition of integration! Lim(n!/n^n)^(1/n) Think Thrice Problem Solving 1.1K views - 2 years ago
8:02 Geometry! What is the area of the triangle between three other triangles in a rectangle?? Think Thrice Problem Solving 1.5K views - 2 years ago
5:12 What can n be?? (N^3+100)/(n+10) is an integer??? Think Thrice Problem Solving 322 views - 2 years ago
9:03 Sqrt(x)+y=7, x+sqrt(y)=11. How can we calculate y and x?!? Think Thrice Problem Solving 818 views - 2 years ago
8:44 A cool number theory problem! What are x and y??? Think Thrice Problem Solving 125 views - 2 years ago
20:25 Geometry! What is the ratio of areas between the red square and blue square in an ellipse?? Think Thrice Problem Solving 102 views - 2 years ago
8:35 Infinitely Nested Root 2s: sqrt(2*sqrt[3](2*sqrt[4](…)))? Think Thrice Problem Solving 110 views - 2 years ago
2:55 Some fun algebra/integration: Int( ln*3x^2+6x+3)-2ln(x+1) )dx. Think Thrice Problem Solving 211 views - 2 years ago
8:57 Geometry! What is the area of a circle not shared with the two outside circles?? Think Thrice Problem Solving 476 views - 2 years ago
9:35 No Real solutions? What about Imaginary?: Solving sin(sin(x))=1 Think Thrice Problem Solving 131 views - 2 years ago
3:04 A beautiful substition in an integral: Int( x(1-x)^2015 )dx. Think Thrice Problem Solving 1K views - 2 years ago
17:21 Fibonacci Sequence! … a solution for the nth term in the sequence??? Think Thrice Problem Solving 242 views - 2 years ago
8:56 Geometry! What is the ratio of areas between the red square and blue square?? Think Thrice Problem Solving 94 views - 2 years ago
4:02 A really useful method for solving limit problems (Conjugate Multiplication) Think Thrice Problem Solving 319 views - 2 years ago
4:26 An Infinite Differential Equation?!?: y=y'+y''+y'''+y''''+... Think Thrice Problem Solving 342 views - 2 years ago
5:25 Geometry! What is the area outside of the circle inscribed in the quarter circle?? Think Thrice Problem Solving 368 views - 2 years ago
5:13 What’s the Function!?! f(x)=(f(1-x)+x^2)/2. What on earth is f(x)? Think Thrice Problem Solving 44 views - 2 years ago
4:49 Geometry! What is the distance between center of a square and an adjacent equilateral triangle??? Think Thrice Problem Solving 310 views - 2 years ago
6:01 Ramanujan’s Nested Radicals! Why does 3=sqrt(1+2sqrt(1+3sqrt(…)))? Think Thrice Problem Solving 937 views - 2 years ago
5:36 Geometry! What is the area of the square inscribed in a 3-4-5 triangle?? Think Thrice Problem Solving 786 views - 2 years ago
4:49 A Math Proof that 2=1!?! ...not quite... Try this out on your math friends! Think Thrice Problem Solving 116 views - 2 years ago
4:24 Geometry! What is the length of the fourth line intersecting at a point in the rectangle?? Think Thrice Problem Solving 500 views - 2 years ago
7:52 A Fibonacci Power Series! … with an analytic solution??? Think Thrice Problem Solving 476 views - 2 years ago
3:22 Geometry! What is the area of the square inscribed between four circles?? Think Thrice Problem Solving 1.3K views - 2 years ago
7:38 The Impossible Limit of a Sequence! x_(n+1)=(x_n+x_(n-1))2. What is the limit?? Think Thrice Problem Solving 156 views - 2 years ago
8:23 An incredibly fun and tricky summation! Sum of (-1)^n(2n+2)/(2n+3)! Come figure it out! Think Thrice Problem Solving 185 views - 2 years ago
3:08 What can k possibly be? 1/k+2/k+3/k+...+9/k is an integer. Come join with some fun algebra! Think Thrice Problem Solving 32 views - 2 years ago
20:50 Sum of 1/n^2? SOLVING THE BASEL PROBLEM WITH INTEGRATION! Think Thrice Problem Solving 556 views - 2 years ago
6:31 Geometry! What is the area of the upper right portion of the square?? Think Thrice Problem Solving 1.5K views - 2 years ago
4:17 Unleashing the Power of Complex Numbers: Solving sqrt(x) + sqrt(-x) = 2 with Ease Think Thrice Problem Solving 71 views - 2 years ago
5:29 Fun with factorials! 24*a!=b!. Come join with some fun algebra! Think Thrice Problem Solving 112 views - 2 years ago
11:19 f(x)+f(1/x)+3f(-x)=x. Let’s get functional! What’s your function? Think Thrice Problem Solving 292 views - 2 years ago
8:04 Logarithmic Manipulation! X(256)^x=1. Can you find the answer?!? Think Thrice Problem Solving 128 views - 2 years ago
6:56 Find an element in the series... New Jersey Math Competition. Come join as we find our element! Think Thrice Problem Solving 29 views - 2 years ago
6:19 So many squares! m^2+2004=n^2. Come join with some fun algebra! Think Thrice Problem Solving 38 views - 2 years ago
2:43 Solving the mind-boggling limit problem: A=lim x+a/(x+a/(x+a/(x+...))) Think Thrice Problem Solving 54 views - 2 years ago
4:40 How many derivatives do we need to take? Mathematics Competition! Come join as we figure it out! Think Thrice Problem Solving 29 views - 2 years ago
5:52 Geometry! What is the area of the 5-6-7 triangle?? Think Thrice Problem Solving 1.5K views - 2 years ago
3:34 2^(-x) less than 0.0001. Math competition!. Come join as we solve our problem! Think Thrice Problem Solving 33 views - 2 years ago
10:55 e^x=cos(x)+i sin(x). Where does that exponential form of complex numbers come from? Think Thrice Problem Solving 357 views - 2 years ago
5:13 Feynman Technique: Int( ln(x) )dx. Differentiating under the integral. Think Thrice Problem Solving 10.5K views - 2 years ago
3:05 Solving a strange system! x+y=xy=x/y. Come join with some fun algebra! Think Thrice Problem Solving 1.4K views - 2 years ago
2:35 Clever little algebra trick! x+xy+y=54. Come join with some fun algebra! Think Thrice Problem Solving 2.3K views - 2 years ago
11:10 Trig Sub Mayhem: Int( ln(x+1)/(x^2+1) )dx. Putnam Exam. Think Thrice Problem Solving 3.1K views - 2 years ago
3:27 Geometry! What is the radius of a circle inscribed in a square?? Think Thrice Problem Solving 4.6K views - 2 years ago