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What is differences between 'of' and 'for' I'd like to know what is difference between 'functions of discontinuities' and 'functions for discontinuities' ?

Thank u!

June 2, 2018
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Difference between "figure out" and "understand"
May 13, 2018
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Usage of preposition 'to' " We have no proof to the contrary "

I'd like to know why the sentence above uses 'to' , and under what circumstances you use 'to', if it's convenient, please give me some example, Thank you!

May 8, 2018
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