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how did you find out that substition you used is correct? Or how did you come to the substitution? As this is the main issue, all other things are just derivations.Thanks.PM
How do we know the correct substitution to be used? Thank you ma
how did you find out that substition you used is correct? Or how did you come to the substitution? As this is the main issue, all other things are just derivations.
Thanks.
PM
How do we know the correct substitution to be used? Thank you ma