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Jack Rod
Jack Rod
9:59 AM
@robjohn hi
are u available?
actually our prof has been teaching us about exact differential equation
for physics
 
Jack Rod
Jack Rod
10:27 AM
and envelope in differential equation
 
 
4 hours later…
Jack Rod
Jack Rod
2:12 PM
@robjohn hi
 
 
2 hours later…
robjohn
robjohn
4:19 PM
@JackRod There are some links to answers with envelopes in this answer.
 

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