New posts in tangent-line

How can I determine wheter or not two curves are tangents?

calculus multivariable-calculus curves tangent-line

How can a "proper" function have a vertical slope?

calculus functions derivatives graphing-functions tangent-line

Problem with basic definition of a tangent line.

calculus definition infinitesimals tangent-line

Drawing two perpendicular tangent line from the origin to $y=x^2-2x+a$

calculus analytic-geometry quadratics curves tangent-line