Find the open intervals on which the function f$($x$)=11$x$2+10$x$+1$fx$=11$x$2+10$x$+1$ is increasing or decreasing.

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Note: Use the letter U for union. To enter$$$,$ type the word infinity.

If the function is never increasing or decreasing, enter NA in the associated response area.

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increasing:

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decreasing:

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Find the local maximum and minimum values of the function f$($x$)=11$x$2+10$x$+1$fx$=11$x$2+10$x$+1.$