作业帮解不等式：[n/(n+1)]﹙3／4﹚^n≥[﹙n+1﹚/﹙n+2﹚](3/4)^n,不好意思，不等式打错了，应该是：[n/(n+1)]﹙3／4﹚^n≥[﹙n+1﹚/﹙n+2﹚](3/4)^（n+1）
来源：学生作业帮助网 编辑：作业帮 时间：2024/08/03 08:20:18
![解不等式：[n/(n+1)]﹙3／4﹚^n≥[﹙n+1﹚/﹙n+2﹚](3/4)^n,不好意思，不等式打错了，应该是：[n/(n+1)]﹙3／4﹚^n≥[﹙n+1﹚/﹙n+2﹚](3/4)^（n+1）](/uploads/image/z/6927344-8-4.jpg?t=%E8%A7%A3%E4%B8%8D%E7%AD%89%E5%BC%8F%EF%BC%9A%5Bn%2F%28n%2B1%29%5D%EF%B9%993%EF%BC%8F4%EF%B9%9A%5En%E2%89%A5%5B%EF%B9%99n%2B1%EF%B9%9A%2F%EF%B9%99n%2B2%EF%B9%9A%5D%283%2F4%29%5En%2C%E4%B8%8D%E5%A5%BD%E6%84%8F%E6%80%9D%EF%BC%8C%E4%B8%8D%E7%AD%89%E5%BC%8F%E6%89%93%E9%94%99%E4%BA%86%EF%BC%8C%E5%BA%94%E8%AF%A5%E6%98%AF%EF%BC%9A%5Bn%2F%28n%2B1%29%5D%EF%B9%993%EF%BC%8F4%EF%B9%9A%5En%E2%89%A5%5B%EF%B9%99n%2B1%EF%B9%9A%2F%EF%B9%99n%2B2%EF%B9%9A%5D%283%2F4%29%5E%EF%BC%88n%2B1%EF%BC%89)
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解不等式：[n/(n+1)]﹙3／4﹚^n≥[﹙n+1﹚/﹙n+2﹚](3/4)^n,不好意思，不等式打错了，应该是：[n/(n+1)]﹙3／4﹚^n≥[﹙n+1﹚/﹙n+2﹚](3/4)^（n+1）
解不等式：[n/(n+1)]﹙3／4﹚^n≥[﹙n+1﹚/﹙n+2﹚](3/4)^n,
不好意思，不等式打错了，应该是：
[n/(n+1)]﹙3／4﹚^n≥[﹙n+1﹚/﹙n+2﹚](3/4)^（n+1）
解不等式：[n/(n+1)]﹙3／4﹚^n≥[﹙n+1﹚/﹙n+2﹚](3/4)^n,不好意思，不等式打错了，应该是：[n/(n+1)]﹙3／4﹚^n≥[﹙n+1﹚/﹙n+2﹚](3/4)^（n+1）
两边除以(3/4)^n
n/(n+1)-(n+1)/(n+2)>=0
(n²+2n-n²-2n-1)/(n+1)(n+2)≥0
-1/(n+1)(n+2)≥0
所以(n+1)(n+2)<0
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