Dr Barker

23.9K subscribers
11:35
Subsequences of Arithmetic & Geometric Sequences
Dr Barker
1.6K views • 6 days ago
7:24
Functional Equation Problem: Find f(4)
Dr Barker
5.3K views • 13 days ago
19:02
Beyond ½ a b sin(C)
Dr Barker
2.9K views • 2 weeks ago
15:29
A Trick for Multiplication by 7
Dr Barker
2.6K views • 3 weeks ago
5:06
A Short Combinatorics Problem
Dr Barker
3.3K views • 1 month ago
10:08
Powers of Non-Diagonalisable Matrices
Dr Barker
7.2K views • 1 month ago
9:03
Why Is This Almost An Integer?
Dr Barker
50K views • 1 month ago
22:33
Intuition Behind The Cayley Hamilton Theorem
Dr Barker
8.3K views • 1 month ago
18:30
A Recurring Decimal Problem
Dr Barker
2.5K views • 2 months ago
4:55
A Short Functional Equation Problem
Dr Barker
10K views • 2 months ago
10:24
Integers as Sums of Fibonacci Numbers
Dr Barker
6.3K views • 2 months ago
7:45
A Nested Square Root Problem
Dr Barker
7.5K views • 2 months ago
7:20
Which is Bigger? Tetration Edition
Dr Barker
3.2K views • 2 months ago
14:21
Can A Function Be Continuous At Only One Point?
Dr Barker
65K views • 3 months ago
12:42
A Fibonacci Series Problem
Dr Barker
4.7K views • 3 months ago
24:42
Gaussian Integral: Infinite Series Approach
Dr Barker
4K views • 3 months ago
7:12
A Limit With A Cube Root
Dr Barker
4K views • 3 months ago
10:10
A Factorial Product Problem
Dr Barker
3K views • 4 months ago
7:19
A Functional Equation Problem
Dr Barker
4.7K views • 4 months ago
9:42
A Fun Exponential Equation
Dr Barker
3.7K views • 4 months ago
25:22
What Lies Above Pascal's Triangle?
Dr Barker
256K views • 4 months ago
19:50
An Amazing Floor & Square Root Identity
Dr Barker
4K views • 5 months ago
5:53
The Best Diagram for Angle Sum Identities
Dr Barker
3.3K views • 5 months ago
6:09
A Factor Tree Puzzle
Dr Barker
2.1K views • 5 months ago
7:28
Convergence of an Interesting Series
Dr Barker
11K views • 5 months ago
13:07
A Tricky Roots of Cubics Problem
Dr Barker
9K views • 5 months ago
6:47
A Satisfying Divisibility Proof
Dr Barker
47K views • 6 months ago
14:41
Finding the Area of a Region
Dr Barker
2.5K views • 6 months ago
15:59
More Minimising Without Calculus
Dr Barker
7.8K views • 6 months ago
9:35
Finding the Range of a Function
Dr Barker
3.3K views • 6 months ago
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