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According to a certain model, if the purchase price of a car is p dollars and the annual rate of depreciation is r percent, compounded annually, then the value v of the car, in dollars, n years after it was purchased is given by the formula $$v=p(1-\frac{r}{100})^{n}$$. If the value of a car 4 years after it was purchased is $$\frac{3}{4}$$ of the purchase price, approximately what is the annual rate of depreciation?
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· 相关考点
3.6.1 函数的定义 2.5.8 复利问题
3.6.1 函数的定义
2.5.8 复利问题
以上解析由 考满分老师提供。
