观察下列各式:√1+1/3=2√1/3,√2+1/4=3√1/4,√3+1/5=4√1/5···.用发现的规律用含n的式子表示
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√[n+1/(n+2)]=(n+1)√(1/n+2)
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======以下答案可供参考======
供参考答案1:
√n+1/(n+2)=(n+1)√1/(n+2)
供参考答案2:
√n+1/(n+2)=(n+1)√1/(n+2)
供参考答案3:
√[n+1/﹙n+2﹚]=n√[1/﹙n+2﹚].
供参考答案4:
√﹙n-1﹚ + 1/﹙n+1﹚= n√1/﹙n+1﹚
供参考答案5:
观察下列各式:√1+1/3=2√1/3,√2+1/4=3√1/4,√3+1/5=4√1/5···.用发现的规律用含n的式子表示(图1)
观察下列各式:√1+1/3=2√1/3,√2+1/4=3√1/4,√3+1/5=4√1/5···.用发现的规律用含n的式子表示(图2)供参考答案6:
√(1+1/3)=2√(1/3),√(2+1/4)=3√(1/4),√(3+1/5)=4√(1/5)···。
√[n+1/(n+2)]
=√[n(n+2)/(n+2)+1/(n+2)]
=√[(n^2+2n+1)/(n+2)]
=√[(n+1)^2/(n+2)]
=(n+1)√[1/(n+2)]
.