Dr Barker - VideoAndMovie

Fun maths videos, covering lots of topics that I find interesting.

Solving an Equation with Logs

8:06

Solving an Equation with Logs

A Calculus Problem with a Twist

11:35

A Calculus Problem with a Twist

Elementary Row Operations & Determinants

14:25

Elementary Row Operations & Determinants

Equation of a Circle in 3D

12:35

Equation of a Circle in 3D

Messing Around With Nested Roots

16:11

Messing Around With Nested Roots

A Ridiculous Approximation

17:16

A Ridiculous Approximation

When It Doesn't Matter If You Use Degrees or Radians

11:48

When It Doesn't Matter If You Use Degrees or Radians

Fibonacci meets Pythagoras

15:26

Fibonacci meets Pythagoras

A Short Simultaneous Equations Problem

6:46

A Short Simultaneous Equations Problem

New Trig Identity Just Dropped!

12:47

New Trig Identity Just Dropped!

A Surprisingly Complex Functional Equation

7:57

A Surprisingly Complex Functional Equation

Proof With Complex Numbers | Harmonic Addition Theorem

9:31

Proof With Complex Numbers | Harmonic Addition Theorem

Nested Probability Problem

8:23

Nested Probability Problem

Determining the Speed of a Fixed-Point Iteration

16:24

Determining the Speed of a Fixed-Point Iteration

Solving a Sextic Equation

10:50

Solving a Sextic Equation

Functional Equation Problem: Find f(52) + f(55)

6:59

Functional Equation Problem: Find f(52) + f(55)

Differential Equations with Repeated Roots: Explained in 3 Ways

22:58

Differential Equations with Repeated Roots: Explained in 3 Ways

Remainder Theorem Problem

5:25

Remainder Theorem Problem

When Proof By Induction Fails

7:53

When Proof By Induction Fails

Upside Down Equations

12:05

Upside Down Equations

There Are More Solutions Than You Might Think | The Pointwise Trap for Functional Equations

7:13

There Are More Solutions Than You Might Think | The Pointwise Trap for Functional Equations

An Irrational Inequality

9:18

An Irrational Inequality

Cubics With ± Roots

11:49

Cubics With ± Roots

Subsequences of Arithmetic & Geometric Sequences

11:35

Subsequences of Arithmetic & Geometric Sequences

Functional Equation Problem: Find f(4)

7:24

Functional Equation Problem: Find f(4)

Beyond ½ a b sin(C)

19:02

Beyond ½ a b sin(C)

A Trick for Multiplication by 7

15:29

A Trick for Multiplication by 7

A Short Combinatorics Problem

5:06

A Short Combinatorics Problem

Powers of Non-Diagonalisable Matrices

10:08

Powers of Non-Diagonalisable Matrices

Why Is This Almost An Integer?

9:03

Why Is This Almost An Integer?