Interval and Radius of Convergence a Power Series using the Ratio Test from Calculus

Interval and Radius of Convergence a Power Series using the Ratio Test from Calculus

[mikashaw]

I love how he explains it as if it's the most exciting thing in the world (thank you though, really helped ;))

[pered]

Good times!
Series tests.
I just had dejavú after watching this.
It felt like I just learned it yesterday.

[nguyendk]

Dear Prof. Math Sorcerer,

Which test could I apply for this series from n = 1 to infinity of (-1/n) ?

Thank you very much.