设3*4=3+4+5+6=18 6*5=6+7+8+9+10 求95*X=585

设3=7,4=23,5=49,6=73,7=? 设A=｛3,5,6,8｝,B=｛4,5,7,8｝,求AnB,AUB 设sina=3/5(派/2 设sina=3/5(派/2 设sina=3/5(3.14/x 设sina=3/5(π/2 设sina=3/5(3.14/x 设x=3,则表达式4 设tan2a=3/4,-π 设函数f(x)＝sin2x-cos(2x-π/6) 1.求[0,π/2]区间最大最小值 2.设α是设函数f(x)＝sin2x-cos(2x-π/6)1.求[0,π/2]区间最大最小值2.设α是锐角,f(α/2+π/4)=3/5求sinα 设A={-4 设全集U=｛0,1,2,3,4,5,6｝,A=｛5,6｝,则Cu(CuA)=? 设a=(2,-3),b=(-4,0),c=(-5,6),求 -2a+3b-4c 脑筋急转弯,智者的题设1=4,2=5,3=6则4=? 设集合m={1,2,5}.N={2,3,4,5,6},则M∩N= 设A={3,5,6,8},B={4,5,7,8},求A∩B,AUB. 设A={4,5,6,8}、B={3、5、7、8},求A∪B 设A={3,5,6,8,},B={4,5,7,8},求A交B,A并B,