高一数学 换元法和凑配法~在线等待脑袋有点短路了,想不通,还忘哥哥姐姐们详细解释下以f(x-1)=x ,求f(x)为例解法一(配凑法)解:∵f(x-1)=x ∴f(x-1)=(x-1)+1∴f(x)=x+1我只能明白∴f(x-1)=
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![高一数学 换元法和凑配法~在线等待脑袋有点短路了,想不通,还忘哥哥姐姐们详细解释下以f(x-1)=x ,求f(x)为例解法一(配凑法)解:∵f(x-1)=x ∴f(x-1)=(x-1)+1∴f(x)=x+1我只能明白∴f(x-1)=](/uploads/image/z/2664938-2-8.jpg?t=%E9%AB%98%E4%B8%80%E6%95%B0%E5%AD%A6+%E6%8D%A2%E5%85%83%E6%B3%95%E5%92%8C%E5%87%91%E9%85%8D%E6%B3%95%7E%E5%9C%A8%E7%BA%BF%E7%AD%89%E5%BE%85%E8%84%91%E8%A2%8B%E6%9C%89%E7%82%B9%E7%9F%AD%E8%B7%AF%E4%BA%86%2C%E6%83%B3%E4%B8%8D%E9%80%9A%2C%E8%BF%98%E5%BF%98%E5%93%A5%E5%93%A5%E5%A7%90%E5%A7%90%E4%BB%AC%E8%AF%A6%E7%BB%86%E8%A7%A3%E9%87%8A%E4%B8%8B%E4%BB%A5f%EF%BC%88x-1%EF%BC%89%3Dx+%2C%E6%B1%82f%EF%BC%88x%EF%BC%89%E4%B8%BA%E4%BE%8B%E8%A7%A3%E6%B3%95%E4%B8%80%EF%BC%88%E9%85%8D%E5%87%91%E6%B3%95%EF%BC%89%E8%A7%A3%EF%BC%9A%E2%88%B5f%EF%BC%88x%EF%BC%8D1%EF%BC%89%3Dx+%E2%88%B4f%28x-1%29%3D%28x-1%29%2B1%E2%88%B4f%28x%29%3Dx%2B1%E6%88%91%E5%8F%AA%E8%83%BD%E6%98%8E%E7%99%BD%E2%88%B4f%28x-1%29%3D)
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