Joshua Helston

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This is my YouTube channel where I will upload examples for my classes taught at MSMU. Anyone may feel free to share if they find them useful. Please feel fr...

Latest Videos

Example using a sinusoid to model a periodic function

Example using a sinusoid to model a periodic function

Joshua Helston

963 views·8 years ago

Showing that limits behave nicely with subtraction

Showing that limits behave nicely with subtraction

Joshua Helston

439 views·8 years ago

Formal argument of a limit

Formal argument of a limit

Joshua Helston

1.6K views·8 years ago

Proving a field property

Proving a field property

Joshua Helston

3.6K views·8 years ago

Finding (not formally proving) four limits

Finding (not formally proving) four limits

Joshua Helston

331 views·8 years ago

Applying the rational roots test to find all roots, even irrational ones

Applying the rational roots test to find all roots, even irrational ones

Joshua Helston

1.2K views·8 years ago

Using induction to prove Bernoulli's inequality

Using induction to prove Bernoulli's inequality

Joshua Helston

12.0K views·8 years ago

Showing a limit that does not exist using epsilon-N

Showing a limit that does not exist using epsilon-N

Joshua Helston

16.0K views·8 years ago

Establishing the limit of a rational function using epsilon-N

Establishing the limit of a rational function using epsilon-N

Joshua Helston

26.7K views·8 years ago

Epsilon-N proof with an already existing sequence

Epsilon-N proof with an already existing sequence

Joshua Helston

4.3K views·8 years ago

Finding the N in an epsilon-N proof

Finding the N in an epsilon-N proof

Joshua Helston

25.7K views·8 years ago

Test prep Tangent lines to circles

Test prep Tangent lines to circles

Joshua Helston

171 views·8 years ago

End behaviour of all polynomials

End behaviour of all polynomials

Joshua Helston

330 views·9 years ago

Solving a rational equation and checking for extraneous solutions

Solving a rational equation and checking for extraneous solutions

Joshua Helston

1.4K views·9 years ago

Finding intercepts from the equation of a function

Finding intercepts from the equation of a function

Joshua Helston

294 views·9 years ago

Solving quadratic equations with various techniques

Solving quadratic equations with various techniques

Joshua Helston

341 views·9 years ago

Using TI83 to find vertex and intercepts of a quadratic function

Using TI83 to find vertex and intercepts of a quadratic function

Joshua Helston

2.8K views·9 years ago

Completing the square to write a quadratic in vertex form

Completing the square to write a quadratic in vertex form

Joshua Helston

26.1K views·9 years ago

Finding percentage change in word problems with formulas

Finding percentage change in word problems with formulas

Joshua Helston

241 views·9 years ago

Finding range of a quadratic by completing the square and writing in vertex form

Finding range of a quadratic by completing the square and writing in vertex form

Joshua Helston

9.9K views·9 years ago

Using the angle sum and difference formulas to rewrite trig expressions

Using the angle sum and difference formulas to rewrite trig expressions

Joshua Helston

1.3K views·9 years ago

Applying the sum and difference formulas to find exact values of trig functions

Applying the sum and difference formulas to find exact values of trig functions

Joshua Helston

2.1K views·9 years ago

$Finding partial fraction decomposition with some factors are repeated$ 5:02

Finding partial fraction decomposition with some factors are repeated

Joshua Helston

166 views·9 years ago

$Finding the partial fraction decomposition with only distinct linear factors$ 3:59

Finding the partial fraction decomposition with only distinct linear factors

Joshua Helston

133 views·9 years ago

$Finding the partial fraction decomposition, irreducible quadratic factor$ 5:17

Finding the partial fraction decomposition, irreducible quadratic factor

Joshua Helston

1.3K views·9 years ago

Sketching the graph of an exponential function

Sketching the graph of an exponential function

Joshua Helston

3.0K views·9 years ago

Applying the continuous exponential growth model (Pert)

Applying the continuous exponential growth model (Pert)

Joshua Helston

137.8K views·9 years ago

Using strategic algebra to find the value of a limit

Using strategic algebra to find the value of a limit

Joshua Helston

50 views·9 years ago

Using double angles identities to rewrite expressions

Using double angles identities to rewrite expressions

Joshua Helston

11.9K views·9 years ago

Finding the values of double angles from a reference triangle

Finding the values of double angles from a reference triangle

Joshua Helston

633 views·9 years ago

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