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The function is \"\", at \"\".

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Continuity Test condition 1:

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Find if  \"\" exists.

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Substitute \"\" in \"\".

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\"\"

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\"\".

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The function is undefined at \"\".

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Continuity Test condition 2:

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Find if \"\" exists.

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Construct a table that shows the values of \"\" for \"\"-values approaching \"\" from the left and from the right. 

\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \
\"\"\"\"\"\"\"\"\"\"\"\"\"\"
\"\"\"\"\"\"\"\"\"\"\"\"\"\"
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Observe the table values, as \"\" tends  to \"\" from the left \"\" approaches \"\" and as \"\" tends to \"\" from the right, \"\" approaches to \"\".

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\"\" and \"\".

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Since\"\", \"\" is discontinuous at \"\".

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Continuity Test condition 3:

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Check\"\".

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Observe above two conditions,

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\"\" does not exist and \"\" is undefined.

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Because \"\" and \"\"\"\" has an infinite discontinuity at \"\".

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\"\" has an infinite discontinuity at \"\".