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ZX-BB7491D7B82026年9月国际C卷练习 · 第 19 题
2026年9月国际C卷练习 · 原库模块 2 · Q19 参考答案
The function \( f \) is defined by \( f(x)=a^x-b \), where \( a \) and \( b \) are constants. In the xy-plane, the graph of \( y=f(x) \) passes through the points (c, 8) and (2c, 218), where c is a constant. Which of the following could be the value of b?
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