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PROGRESSIONS (2)
 HARMONIC PROGRESSION
A series is said to be in harmonic progression if the series consisting of the reciprocals of each term in the series is in AP. In other words a series a1, a2, a3, a4,………, an is in HP if 1/ a1,1/a2, 1/a3, 1/a4,………, 1/an are in AP.
The nth term of an harmonic progression […]

PROGRESSIONS
ARITHMETIC PROGRESSION

A sequence of numbers is in arithmetic progression (AP) when the difference between two consecutive numbers is a constant. We can thus say that tn+1 - tn = d. This constant d is called the common difference of the arithmetic progression. In other words, an arithmetic progression can be described as a series of […]