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while solving the eqation of pair of straigt lines we take their partial differential=0,why?

 
while solving the eqation of pair of straigt lines we take their partial differential=0,why?

Grade:12

1 Answers

Arun
25750 Points
5 years ago
Dear student
 
if a Curve C = 0 is given
 
then its differentiation is always 0 in RHS.
 
similarly, for pair of straight line, one side will always be zero

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