已知已知a⊥b且丨a丨=2,丨b丨=1,若对两个不同时为零的实数k,t,使得a+(t-3)b与-ka+b垂直1)试将k表示成关于t的函数的解析式k=f(t)2)求k(min) (注意:a,b均表示向量,箭头略了)
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![已知已知a⊥b且丨a丨=2,丨b丨=1,若对两个不同时为零的实数k,t,使得a+(t-3)b与-ka+b垂直1)试将k表示成关于t的函数的解析式k=f(t)2)求k(min) (注意:a,b均表示向量,箭头略了)](/uploads/image/z/5166888-24-8.jpg?t=%E5%B7%B2%E7%9F%A5%E5%B7%B2%E7%9F%A5a%E2%8A%A5b%E4%B8%94%E4%B8%A8a%E4%B8%A8%3D2%2C%E4%B8%A8b%E4%B8%A8%3D1%2C%E8%8B%A5%E5%AF%B9%E4%B8%A4%E4%B8%AA%E4%B8%8D%E5%90%8C%E6%97%B6%E4%B8%BA%E9%9B%B6%E7%9A%84%E5%AE%9E%E6%95%B0k%2Ct%2C%E4%BD%BF%E5%BE%97a%2B%28t-3%29b%E4%B8%8E-ka%2Bb%E5%9E%82%E7%9B%B41%EF%BC%89%E8%AF%95%E5%B0%86k%E8%A1%A8%E7%A4%BA%E6%88%90%E5%85%B3%E4%BA%8Et%E7%9A%84%E5%87%BD%E6%95%B0%E7%9A%84%E8%A7%A3%E6%9E%90%E5%BC%8Fk%3Df%28t%292%EF%BC%89%E6%B1%82k%EF%BC%88min%EF%BC%89+%EF%BC%88%E6%B3%A8%E6%84%8F%EF%BC%9Aa%2Cb%E5%9D%87%E8%A1%A8%E7%A4%BA%E5%90%91%E9%87%8F%2C%E7%AE%AD%E5%A4%B4%E7%95%A5%E4%BA%86%EF%BC%89)
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