求下列函數(shù)的導(dǎo)數(shù): (1)y=3x2-4x+10 (2)y=1/+7sinx+8cosx-100 (3)y=(ax+b)/(a+bx) (4)y=sin (5)y=ex (6)y=e-x+100x
A.由買產(chǎn)品轉(zhuǎn)向賣服務(wù)B.由賣服務(wù)轉(zhuǎn)向賣產(chǎn)品C.什么都不賣
A.統(tǒng)籌B.和諧C.凝聚D.協(xié)調(diào)