设函数f(x)=㏒a(x+b)(a>0.a ≠1)的图像过点(0,0),其反函数的图像过点(1,2),则a+b等于?
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![设函数f(x)=㏒a(x+b)(a>0.a ≠1)的图像过点(0,0),其反函数的图像过点(1,2),则a+b等于?](/uploads/image/z/1638755-35-5.jpg?t=%E8%AE%BE%E5%87%BD%E6%95%B0f%28x%29%3D%E3%8F%92a%28x%2Bb%29%28a%EF%BC%9E0.a+%E2%89%A01%29%E7%9A%84%E5%9B%BE%E5%83%8F%E8%BF%87%E7%82%B9%EF%BC%880%2C0%EF%BC%89%2C%E5%85%B6%E5%8F%8D%E5%87%BD%E6%95%B0%E7%9A%84%E5%9B%BE%E5%83%8F%E8%BF%87%E7%82%B9%EF%BC%881%2C2%EF%BC%89%2C%E5%88%99a%2Bb%E7%AD%89%E4%BA%8E%3F)
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