Vertex of a parabola without calculus?
102496
Derivation of the formula for the vertex of a parabola
105433
Graphing $y = \frac{x^2-4}{x-2}$
147503
Solving $4x = e^x$ without graphing and looking for intersection
112027
How do you find the self-intersection points of a single parametric trigonometric function?
154891
Finding cubic function from points?
70303
Parametric form of a plane
105997
Geometric interpretation of $\frac {\partial^2} {\partial x \partial y} f(x,y)$
131919
Vertices of equilateral triangle inscribed in the unit circle
139314
Find the latus rectum of the Parabola
106483
How to find angle x without calculator?
84074
3 normals on a parabola
100007
Express partial derivatives of second order (and the Laplacian) in polar coordinates
4343
Conformal parametrization of an ellipse
93170
Find the side of an equilateral triangle given only the distance of an arbitrary point to its vertices
117020
Regular $n$-gon in the plane with vertices on integers?
89452
Proof about Graph with no triangle
73805
How can we get Pythagoras from the Parallelogram law?