y=(1/2)的X次方&y=log2(1/x)的交點有幾個y=(1/2)的X次方&y=log2(1/x)的有無交點?
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![y=(1/2)的X次方&y=log2(1/x)的交點有幾個y=(1/2)的X次方&y=log2(1/x)的有無交點?](/uploads/image/z/3695901-69-1.jpg?t=y%3D%281%2F2%29%E7%9A%84X%E6%AC%A1%E6%96%B9%26y%3Dlog2%281%2Fx%29%E7%9A%84%E4%BA%A4%E9%BB%9E%E6%9C%89%E5%B9%BE%E5%80%8By%3D%281%2F2%29%E7%9A%84X%E6%AC%A1%E6%96%B9%26y%3Dlog2%281%2Fx%29%E7%9A%84%E6%9C%89%E7%84%A1%E4%BA%A4%E9%BB%9E%3F)
y=(1/2)的X次方&y=log2(1/x)的交點有幾個y=(1/2)的X次方&y=log2(1/x)的有無交點?
y=(1/2)的X次方&y=log2(1/x)的交點有幾個
y=(1/2)的X次方&y=log2(1/x)的有無交點?
y=(1/2)的X次方&y=log2(1/x)的交點有幾個y=(1/2)的X次方&y=log2(1/x)的有無交點?
y=(1/2)的X次方 就是 y=2的-X次方; y=log2(1/x) 就是 y=-log2(x); 图像一画,就知道在第一象限有一个交点,且只有这一个交点