已知向量a=(1,1)向量b=(1,m)其中m为实数O为原点已知向量a=(1,1),b=(1,m),其中m为实数,O为原点,当两向量夹角在(0,π/12)变动时,m的取值范围是A(0,1) B(根号3/3,根号3) C(根号3,1)U(1,根号3) D(1,根号3
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![已知向量a=(1,1)向量b=(1,m)其中m为实数O为原点已知向量a=(1,1),b=(1,m),其中m为实数,O为原点,当两向量夹角在(0,π/12)变动时,m的取值范围是A(0,1) B(根号3/3,根号3) C(根号3,1)U(1,根号3) D(1,根号3](/uploads/image/z/3966053-5-3.jpg?t=%E5%B7%B2%E7%9F%A5%E5%90%91%E9%87%8Fa%3D%281%2C1%29%E5%90%91%E9%87%8Fb%3D%281%2Cm%29%E5%85%B6%E4%B8%ADm%E4%B8%BA%E5%AE%9E%E6%95%B0O%E4%B8%BA%E5%8E%9F%E7%82%B9%E5%B7%B2%E7%9F%A5%E5%90%91%E9%87%8Fa%3D%281%2C1%29%2Cb%3D%281%2Cm%29%2C%E5%85%B6%E4%B8%ADm%E4%B8%BA%E5%AE%9E%E6%95%B0%2CO%E4%B8%BA%E5%8E%9F%E7%82%B9%2C%E5%BD%93%E4%B8%A4%E5%90%91%E9%87%8F%E5%A4%B9%E8%A7%92%E5%9C%A8%280%2C%CF%80%2F12%29%E5%8F%98%E5%8A%A8%E6%97%B6%2Cm%E7%9A%84%E5%8F%96%E5%80%BC%E8%8C%83%E5%9B%B4%E6%98%AFA%280%2C1%29+B%28%E6%A0%B9%E5%8F%B73%2F3%2C%E6%A0%B9%E5%8F%B73%EF%BC%89+C%EF%BC%88%E6%A0%B9%E5%8F%B73%2C1%EF%BC%89U%EF%BC%881%2C%E6%A0%B9%E5%8F%B73%EF%BC%89+D%EF%BC%881%2C%E6%A0%B9%E5%8F%B73)
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