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Ahoy!Ahoy!Ahoy!Ahoy!Ahoy!!!!!!!!!!!!!!!!!!!!!!!!!!!!
https://t.co/c2yCUurULQ
#マリンのお宝 #宝鐘マリン
1.y"+3y'- 4y = 8cos 2x+6sin 2x
2. (initial value problem)
y"- 2y'+(4π^2+1) y=0 , y(0)=-2 , y'(0)=6π-2
伝説対決 ishar #ishar #伝説対決 #ArenaofValor #AOV #依夏 #夢夢 https://t.co/HQjuuU3Wl0