Question

what is the use and difference in with and without...........

Answer 1

I think the difference is the same there is between "it was no easy task persuading her," and " it was not an easy task persuading her."    And what is the difference between "it was no easy task persuading her,"and " it was not an easy task persuading her."? 

Answer 2

u can say that with means 'accompanied by' or 'along with'.
For eg. I m going to the park with her.

without can mean 'in the absence of ' 
For eg. Her mother called her so i had to go without her.

Hope it helped you. : )