discriminant

equation of straight line through \((x_1,y_1)\) with gradient \(m\)

perpendicular straight lines with gradients \(m_1\) and \(m_2\)

equation of circle with centre \((a,b)\) and radius \(r\)

differentiation of \(y=x^n\)

differentiation of \(y=f(x)+g(x)\)

Min / Max / Point of inflection
(2nd derivative)

Minimum point
(2nd derivative)

Maximum point
(2nd derivative)