函数<img src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAIwAAAArCAYAAACq2WBoAAADxklEQVR4nO2bMbKiQBCG/9nao6iB5QngBGpiZPqyIeQlL9tws00g1CMYmTicQE/wyuDBXXoD1FIZdIZBBO2vikBhZmj4mZ7uBkFEBIYx5NezT4DpFiwYxgoWzDuQxfCFjzhz74oF8+okAUT/E7uaumPBvDrjBYgUZE3d/a6pn9YjhHj2KZzocmD6NoIBun2j2gK7JMaKtxCMEOIJs0uCQAgIIeDXEZ60BHfBZDHixOL4JK4lvGs7WfyDGRGIFEaf/2BzidqMm2CyGP4HMB1btBlPgY96cgJtpheGyC/LGDP5jZ9XsZfukUbkAQR4FKUXOyiSEaVl7W536tDWHhMzH4mKmrO1wOn+5ZtUbt3dvpJpRB4kKSJSEuSdK0bJy9+WpJHnfPImXIgljcgrCP/BKNmInU1xUzBKlitSSccLn0bkNXAlT4JR8vCUNSgYJQmvpBa6JRglCYfZRbOTZOk+U+ro4z6X7kiRbEgwaeSd3EAdrqAtaBe9SSAgJksAS0z8GIX1WvaD77JFURJACAFxancIL3X9oOOLwRu2ItyC8gcSRISFaWCQBAhaHFJpM73jBUFB4O8wxTbsFQ9I99h5Q/T1jUH0hdj/wCYbYN9fY0aEReHAPobeDvsUgGaITmBs6+tQElZn+PkGRoOqd7KH6Rz47K8xowXMo+4MsZ8nu7RbyaN3fsz1/2SUsKs2rput3UQvmGyD1U5i5mB9bzqHVzYLlbdCuKWLqfxiK5nXj/sdzrbSuKfWlWw9ciXWyRLLydlvjSsvFfaDtnO0gsk2q3KXY0iyWQG7FTZWaxSXJz3nGVXparYeuRKrkpDq7Pc2LHjsUmE/aDtHK5h0v4M3n5YvLfpDeLs90pLdWexjPdjijzysUUoXch6GF6p0e9LdZplqmNv6IhQDJ5PQUx8SK5mHkKeE3jH3oY0pHxdW4xDKXlBzxtPOVquOWx2CFwVjmGxqc+JOKximFnKXlMXwRYAECYLJN6Kv+6vd8WyEVTWnnQ+5WWHksqq+AfGLUg8jF0xvgBGWmIi/GKZb6FIvBcZfmO83mmScCRk2+zkMdFkZFk1F7n1h4DQ/pRHJKn5JRc0WABkzDOptbu/D9EJ84cMuKkgCiPXAbBZjmsXgCwPnN+564da8TnI8KasGjBarml19vNVXAy/Fk+pYb/ES+Otyr47lnjm/hmeYjtObzuGtUFLGyTPnYY3j8QzTcdzqWPawYDrMU+pYzQb6TB08rI5lUG8TRJwSZcxhl8RYwYJhrGDBMFawYBgrWDCMFSwYxgoWDGPFf6sghBWdz0/gAAAAAElFTkSuQmCC">的定义域为( )
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出自:佳木斯大学语言治疗学