Question

$\blue{\boxed{What\:is\:duplex\:method\:?}}$​​

Answer 1

Step-by-step explanation:

If we are having a single or central digit, then 'Duplex' means squaring that digit (a2 ). Secondly it can be used for even digits number or on numbers having equidistant digits, then 'Duplex' means to double of cross multiplication of the equidistant numbers (2ab).

Answer 2

$\mathfrak{\huge \underline{Question:}}$

What is duplex method?

$\mathfrak{\huge \underline{Answer:}}$

The vedic method of finding square root is called duplex method.

For a 2-digit number, the duplex is simply twice the product of the 2 digits of the number. Thus, the duplex of 16 is 2x1x6 = 12, the duplex of 90 is 2x9x0 = 0, the duplex of 43 is 2x4x3 = 24, and so on For n-digit numbers, the duplex is calculated as the sum of several individual duplexes. Pair up the first digit with the nth digit of the number and find the duplex of the resulting 2-digit number. Similarly pair up the second digit with the (n-1)th digit and find the duplex of the resulting 2-digit number. Continue this process until no more 2-digit pairs can be formed. If a middle digit (that could not be paired with anything else exists at the end of the process, find its duplex also individually. Then add up all the duplexes found. The resulting sum of the duplex of the n-digit number

Its a very voluminous and ambiguous topic and is not easy to explain here....i would say to open Wikipedia or other site for more details.