New posts in Infinitesimals

Are infinitesimals equal to zero?

What is the use of hyperreal numbers?

Problem with basic definition of a tangent line.

Is it a new type of induction? (Infinitesimal induction) Is this even true?

Is this a correct/good way to think interpret differentials for the beginning calculus student?

Are there concepts in nonstandard analysis that are useful for an introductory calculus student to know?

What is the topology of the hyperreal line?

Is $0$ an Infinitesimal?

Are infinitesimals dangerous?

What is $dx$ in integration?