若1,a1,a2,a3,4成等比数列,3,b1,b2,b3,5,成等差数列,则a2/b2的值是具体步奏,
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![若1,a1,a2,a3,4成等比数列,3,b1,b2,b3,5,成等差数列,则a2/b2的值是具体步奏,](/uploads/image/z/8783478-54-8.jpg?t=%E8%8B%A51%2Ca1%2Ca2%2Ca3%2C4%E6%88%90%E7%AD%89%E6%AF%94%E6%95%B0%E5%88%97%2C3%2Cb1%2Cb2%2Cb3%2C5%2C%E6%88%90%E7%AD%89%E5%B7%AE%E6%95%B0%E5%88%97%2C%E5%88%99a2%2Fb2%E7%9A%84%E5%80%BC%E6%98%AF%E5%85%B7%E4%BD%93%E6%AD%A5%E5%A5%8F%2C)
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若1,a1,a2,a3,4成等比数列,3,b1,b2,b3,5,成等差数列,则a2/b2的值是具体步奏,
若1,a1,a2,a3,4成等比数列,3,b1,b2,b3,5,成等差数列,则a2/b2的值是
具体步奏,
若1,a1,a2,a3,4成等比数列,3,b1,b2,b3,5,成等差数列,则a2/b2的值是具体步奏,
∵a2是1和4的等比中项,
∴a2=√(1×4)=2,
b2是3和5的等差中项,
∴b2=(3+5)/2=4
则a2/b2=2/4=1/2