math 521

0:05:43

Math 521 #146: Minimum Value (2022 Cyprus JBMO TST)

0:05:18

Math 521 #135: Algebra Manipulation and integer solution

0:07:06

Math 521 #151: Minimum value using Cauchy–Bunyakovsky–Schwarz Inequality

0:05:23

math 521 #156 Powers of 3 (Number bases)

0:11:04

math 521 #158: Three different ways to a question (Vieta's formula and Calculus, etc)

0:07:29

math 521 #155 Four congruent right triangles and Five congruent circles (Pythagoras vs trigonometry)

0:10:39

Math 521 #147: Integer Solution (Canadian Mathematical Olympiad Qualifying Repechage 2021)

0:06:19

Math 521 #150: Number partitions (3-powers)

0:06:36

math 521 #165: MPOW Cryptogram

0:07:11

math 521 #145: 2022 Canada National Olympiad Q1

0:06:51

math 521 #159: Trigonometric Equation (Cosine Rule: 25 is the minimum!)

0:08:42

Math 521 #149: Cosine Rule (When the equality holds???)

0:10:47

math 521 #153: A challenging number theory question from Japan Junior Math Olympiad 2014

0:12:19

Math 521 #137: Integer solutions and Perfect Squares

0:08:07

math 521 #154 An interesting number theory question for beginners, with surprise fraction-relations

0:07:21

math 521 #162: Maximum area (it may not be a right-angled triangle)

0:07:25

math 521 #163: Arithmetic sequence (don't forget the negative numbers!)

0:32:34

Math 521 Notes XVII discussion

0:11:18

Math 521 #152: Maximum value using AM-GM Inequality

0:07:43

math 521 #157: a challenging decimal question (most get it wrong!)

0:00:23

Addition Trick |🦋Butterfly Method for addition fraction |Fraction Trick #shorts #fraction #tricks

0:07:30

521 Math #120: Lines pass through a fixed point (Finding minimum area)

0:09:24

math 521 #138: Cyclic equations with non-equal-values

0:08:40

Math 521 #148: Sum of three squares