已知向量a=(cos3\2x,sin3\2x),向量b=(cosx\2,-sinx\2),且x属于[0,π\2],求1.|向量a+向量b|2.求函数f(x)=向量a.向量b-4|向量a+向量b|的最小值
来源:学生作业帮助网 编辑:作业帮 时间:2024/08/17 04:48:20
![已知向量a=(cos3\2x,sin3\2x),向量b=(cosx\2,-sinx\2),且x属于[0,π\2],求1.|向量a+向量b|2.求函数f(x)=向量a.向量b-4|向量a+向量b|的最小值](/uploads/image/z/10132769-65-9.jpg?t=%E5%B7%B2%E7%9F%A5%E5%90%91%E9%87%8Fa%3D%EF%BC%88cos3%5C2x%2Csin3%5C2x%29%2C%E5%90%91%E9%87%8Fb%3D%28cosx%5C2%2C-sinx%5C2%29%2C%E4%B8%94x%E5%B1%9E%E4%BA%8E%5B0%2C%CF%80%5C2%5D%2C%E6%B1%821.%7C%E5%90%91%E9%87%8Fa%2B%E5%90%91%E9%87%8Fb%7C2.%E6%B1%82%E5%87%BD%E6%95%B0f%28x%29%3D%E5%90%91%E9%87%8Fa.%E5%90%91%E9%87%8Fb-4%7C%E5%90%91%E9%87%8Fa%2B%E5%90%91%E9%87%8Fb%7C%E7%9A%84%E6%9C%80%E5%B0%8F%E5%80%BC)
xSJA~ewv
t|.2
6\/̢V-z+_ٙi. jfw|gL,GG
JvJn& )VAcHI^n¶v{1 4yP#y&2fDpa}1l˳{Qª'6I_zUؿ*8
3L*̤MґLʓ,'l&E"|7OʭeATs|֦WSiDI TIDXh+k#T,R