The exponential function is $\"\"$ .

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The graph passing through the points are $\"\"$ .

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Substitute $\"\"$ in $\"\"$ to find $\"\"$ .

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$\"\"$

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Substitute $\"\"$ in $\"\"$ to find $\"\"$ .

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$\"\"$

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Substitute $\"\"$ in the $\"\"$ .

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$\"\"$

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The exponential function is $\"\"$ .