已知向量a=(cos 3/2 x,sin 3/2 x),b=(cos x/2,-sin x/2),x属于[0,π/2],

已知向量a=[cos(3x/2),sin(3x/2)],已知向量b=[cos(x/2),-sin(x/2)],x属于[0 已知向量a=(cos 3/2 x,sin 3/2 x),b=(cos x/2,-sin x/2),x属于[0,π/2], 已知向量a=(cos(3/2)x,sin(3/2)x),向量b=(-sin(x/2),-cos(x/2)),x属于90度 已知向量a=(cosωx-sinωx,sinωx),b=(-cosωx-sinωx,2√ 3cosωx), 已知向量a=[cos(3x/2),sin(3x/2)],b=[cos(x/2),-sin(x/2),]且x∈[0,π/2 已知向量a=(cos(3x/2),sin(3x/2)),b=(cos(x/2),-sin(x/2)),且x∈[0,π/2 已知向量a=(cos 3/2x,sin 3/2x),b=(cos x/2,-sin x/2),x∈[0,π/2] 设向量a=(cos(x/2),sin(x/2)),向量b=(sin(3x/2),cos(3x/2)),x∈[0,π/2] 已知向量a=(cos 3x/2,sin3x/2),b=(cos x/2,-sin x/2),且x∈【0,π/2】,f(x 已知a向量=(cos(2x-π/3),sin(x-π/4),b向量=(1,2sin(x+π/4)),函数f(x)=a向量 已知向量a=(cos(2x-π/3),sin(x-π/4)),向量b=(1,2sin(x π/4)),函数f(x)=向量 设函数f(x)=a*b,其中向量a=(2cos x,1),b=(cos x,根号3 sin 2x),x属于(-30,30