Category: Mathematics
Conic sections: an introduction from space
The conic sections (or simply conics) are those curves that are obtained as the intersection of the surface of a cone with a plane. Here, we discuss what kind of curves are achieved by varying the characteristics of the plane...
Fractions LCM: Mathway vs WolframAlpha
What is the Least Common Multiple (LCM) of two or more fractions? Probably, one can ask himself “What do I need this calculation for?” or maybe one thinks that it is equal to the...
Periodic decimal numbers as series: generating fractions
The periodic decimal numbers, like every kind of decimal numbers, have their own generating fraction. In this post, we provide general proof of the method usually used for converting them to fractions. Let us...
The parabolic mirror and its remarkable reflection property
A parabolic mirror is a mirror that has the shape of a rotating paraboloid. The latter one is a space surface of equation (see example in the figure below for ), obtained by rotating...
What is the Cartesian equation of a round cartoons cloud?
What is the Cartesian equation of a round cartoon cloud? What do we mean by a cartoon cloud? Of course, I do not mean a real cloud made by water steam, and floating in...
What mark do you need to get the desired average?
What mark do you need to get the desired average? In detail, let us consider a student who up to date received in a discipline the following sequence of marks Moreover, let us assume...
