Please answer both 3a and 3b fully so that I can use these practice problem examples to study. Thank you!

3a. Estimate the value of lim r-+x-6 x-2 x-2 numerically by constructing an appropriate table of values. Then, determine the exact value of the limit by using algebra. Finally, plot each function on an appropriate interval to check your result graphically. 3b. Estimate the value of lim x 3 1 x-4 x-4 numerically by constructing an appropriate table of values. Then, determine the exact value of the limit by using algebra. Finally, plot each function on an appropriate interval to check your result graphically. Show transcribed image text