设f(k)满足不等式log(2)(x)+log(2)(3*2^(k-1)-x)>=2k-1的自然数的个数,求f(k)的求f(k)的解析式及前n项和Sn的解析式.怎么化简那个不等式啊?
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/06 17:58:13
![设f(k)满足不等式log(2)(x)+log(2)(3*2^(k-1)-x)>=2k-1的自然数的个数,求f(k)的求f(k)的解析式及前n项和Sn的解析式.怎么化简那个不等式啊?](/uploads/image/z/691436-20-6.jpg?t=%E8%AE%BEf%28k%29%E6%BB%A1%E8%B6%B3%E4%B8%8D%E7%AD%89%E5%BC%8Flog%282%29%28x%29%2Blog%282%29%283%2A2%5E%28k-1%29-x%29%3E%3D2k-1%E7%9A%84%E8%87%AA%E7%84%B6%E6%95%B0%E7%9A%84%E4%B8%AA%E6%95%B0%2C%E6%B1%82f%28k%29%E7%9A%84%E6%B1%82f%28k%29%E7%9A%84%E8%A7%A3%E6%9E%90%E5%BC%8F%E5%8F%8A%E5%89%8Dn%E9%A1%B9%E5%92%8CSn%E7%9A%84%E8%A7%A3%E6%9E%90%E5%BC%8F.%E6%80%8E%E4%B9%88%E5%8C%96%E7%AE%80%E9%82%A3%E4%B8%AA%E4%B8%8D%E7%AD%89%E5%BC%8F%E5%95%8A%3F)
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来源:学生作业帮助网 编辑:作业帮 时间:2024/07/06 17:58:13