1. Find graphically: How close should x be to 1 so that x² + 3 is within 0.1 of 4?
2. Use inequalities to rephrase the question, "How close should x be to 1 so that x² + 3 is within 0.1 of 4?". Use the TI-89 solve( command to find the solution.
3. Use the TI-89 limit( command to evaluate the following limits.

   1. 
   2.   (radian mode)
   3. 
   4. 
4. Provide graphical and numerical support for by graphing the function and using the Trace feature.

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