Plane Analytical Geometry

By M Bourne

math expression

The curves that we learn about in this chapter are called conic sections. They arise naturally in many situations. They are the result of slicing a cone at various angles, as you can see in the animation.

Why study analytical geometry?

An interesting application from nature:

The Nautilus Shell

shell

See: Equiangular spiral.

(Image from Tree of Life)

Science and engineering involves the study of quantities that change relative to each other (for example, distance-time, velocity-time, population-time, force-distance, etc).

It is much easier to understand what is going on in these problems if we draw graphs showing the relationship between the quantities involved.

The study of calculus depends heavily on a clear understanding of functions, graphs, slopes of curves and shapes of curves. For example, in the Differentiation chapter we use graphs to demonstrate relationships between varying quantities.



In this Chapter

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We begin with some basic definitions of slope, parallel lines and perpendicular lines »



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