Administrator May 21, Progressions 1 comments Arithmetic Progression Quantities said to be in Arithmetic progression when they increase or decreases by a common difference. For example : 4, 6, 8, Increasing by common difference 2. Here common difference is d. Common difference : The common difference of an AP is found by subtracting any term of the series from next term. Here, the first term is a and common difference is d.

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Simply we can say that harmonic progression is the reciprocal of the values of the terms in arithmetic progression. A sequence can be said in harmonic progression only when the terms are in harmonic mean with their neighboring terms. P are indicated as arithmetic, geometry and harmonic progression, then A. P And, A. Arithmetic and geometric progression: Arithmetic terms are the sequence of numbers in which the difference between any two adjacent terms is constant and is also known as the common difference which is denoted by d.

The common difference of any geometric progression can be easily calculated by dividing the second term with the first term and the quotient remaining is known as common difference, i. P, and H. P can be easily calculated with the help of its general formulae, i. Where A. M is the Arithmetic Mean, G. M is the Geometric Mean and the H. M is known as Harmonic Mean. M2 Where A. P and A. P is that most of the H. P terms are calculated by first converting them into the terms of A.

To check whether the sequence is in harmonic progression or not we must check if the reciprocal of the given sequence has the same difference between their consecutive terms and can be called as an arithmetic sequence then the given sequence whose reciprocal was done can be said in harmonic progression. Some examples are shown below to explain the concept of harmonic progression:- Example 1 If the 7th and the 12th term of an H.

Solution: The solution of the above example can be given with the help of the general form of the Harmonic progression.

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