What is the meaning of duplex in vedic math?

Answer :

Duplex in vedic math , is a process to find square of any number , we use the formulas in duplex method

D( X ) = X2
D( XY ) = 2 XY
D( XYZ ) = ( 2XZ ) + Y2
D( ABCD ) = ( 2AD ) + ( 2BC )
D( ABCDE ) = ( 2AE ) + ( 2BD ) + C2


We can understand how these formulas works , by taking and example As  :

Find value of 432 , by duplex method  ,

So, 

D (  4 ) =  42 =  16

D ( 43 ) =  2 ×× 3  =  24  

D (  3 ) =  32 =  9  = 09

Now we add them As : 

So,
432 =  1849  , by Duplex method

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It is referred toDuplex Combination Process in simple maths

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