New to optimization, tell me what to focus on:

full image - Repost: New to optimization, tell me what to focus on: (from Reddit.com, New to optimization, tell me what to focus on:)

https://ift.tt/R9WZXOq

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Mining:
Bitcoin, Cryptotab browser - Pi Network cloud PHONE MINING
Fone, cloud PHONE MINING cod. dhvd1dkx - Mintme, PC PHONE MINING

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Exchanges:
Coinbase.com - Stex.com - Probit.com

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Donations:
Done crypto