在数列{a(n)},{b(n)}中,a(1)=2,b(1)=4,且a(n),b(n),a(n+1)成等差数列,b(n),a(n+1),b(n+1) 成等比数列(1)求{a(n)},{b(n)}的通项公式(2)求(1/(a1+b1))+(1/(a2+b2))+……+(1/(an+bn))
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![在数列{a(n)},{b(n)}中,a(1)=2,b(1)=4,且a(n),b(n),a(n+1)成等差数列,b(n),a(n+1),b(n+1) 成等比数列(1)求{a(n)},{b(n)}的通项公式(2)求(1/(a1+b1))+(1/(a2+b2))+……+(1/(an+bn))](/uploads/image/z/12629806-70-6.jpg?t=%E5%9C%A8%E6%95%B0%E5%88%97%EF%BD%9Ba%28n%29%EF%BD%9D%2C%7Bb%28n%29%7D%E4%B8%AD%2Ca%281%29%3D2%2Cb%281%29%3D4%2C%E4%B8%94a%28n%29%2Cb%28n%29%2Ca%28n%2B1%29%E6%88%90%E7%AD%89%E5%B7%AE%E6%95%B0%E5%88%97%2Cb%28n%29%2Ca%28n%2B1%29%2Cb%28n%2B1%29+%E6%88%90%E7%AD%89%E6%AF%94%E6%95%B0%E5%88%97%EF%BC%881%EF%BC%89%E6%B1%82%EF%BD%9Ba%28n%29%EF%BD%9D%2C%7Bb%28n%29%7D%E7%9A%84%E9%80%9A%E9%A1%B9%E5%85%AC%E5%BC%8F%EF%BC%882%EF%BC%89%E6%B1%82%EF%BC%881%2F%EF%BC%88a1%2Bb1%EF%BC%89%EF%BC%89%2B%EF%BC%881%2F%EF%BC%88a2%2Bb2%EF%BC%89%EF%BC%89%2B%E2%80%A6%E2%80%A6%2B%EF%BC%881%2F%EF%BC%88an%2Bbn%EF%BC%89%EF%BC%89)
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