(1).已知向量a(2,3),向量b=(-4,2),求向量a*向量b,(向量a+向量b)2次方 (2).已知向量a绝对值=3,向量绝对值b=4,且向量a与向量b的夹角θ=150°,求向量a*向量b,(向量a*向量b)2次方(3)向量AA1+
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![(1).已知向量a(2,3),向量b=(-4,2),求向量a*向量b,(向量a+向量b)2次方 (2).已知向量a绝对值=3,向量绝对值b=4,且向量a与向量b的夹角θ=150°,求向量a*向量b,(向量a*向量b)2次方(3)向量AA1+](/uploads/image/z/2476329-33-9.jpg?t=%EF%BC%881%EF%BC%89.%E5%B7%B2%E7%9F%A5%E5%90%91%E9%87%8Fa%EF%BC%882%2C3%EF%BC%89%2C%E5%90%91%E9%87%8Fb%3D%EF%BC%88-4%2C2%EF%BC%89%2C%E6%B1%82%E5%90%91%E9%87%8Fa%2A%E5%90%91%E9%87%8Fb%2C%EF%BC%88%E5%90%91%E9%87%8Fa%2B%E5%90%91%E9%87%8Fb%292%E6%AC%A1%E6%96%B9+%EF%BC%882%EF%BC%89.%E5%B7%B2%E7%9F%A5%E5%90%91%E9%87%8Fa%E7%BB%9D%E5%AF%B9%E5%80%BC%3D3%2C%E5%90%91%E9%87%8F%E7%BB%9D%E5%AF%B9%E5%80%BCb%3D4%2C%E4%B8%94%E5%90%91%E9%87%8Fa%E4%B8%8E%E5%90%91%E9%87%8Fb%E7%9A%84%E5%A4%B9%E8%A7%92%CE%B8%3D150%C2%B0%2C%E6%B1%82%E5%90%91%E9%87%8Fa%2A%E5%90%91%E9%87%8Fb%2C%EF%BC%88%E5%90%91%E9%87%8Fa%2A%E5%90%91%E9%87%8Fb%EF%BC%892%E6%AC%A1%E6%96%B9%EF%BC%883%EF%BC%89%E5%90%91%E9%87%8FAA1%2B)
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