A.1 B.3 C.2 D.4
A.S(t)=∫083t2dt B.S(t)=ds/dt+t2 C.S(t)=t3+3t D.S(t)= t2+2t
A.數(shù)學猜想 B.數(shù)學抽象 C.數(shù)學證明 D.數(shù)學模擬