# Part 3 of 3 this limit can now be evaluated as

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Part 3 of 3 This limit can now be evaluated as follows. (If an answer does not exist, enter DNE.) You have now completed the Master It. 5. 3/3 points | Previous Answers SCalcET7 2.3.020. Evaluate the limit, if it exists. (If an answer does not exist, enter DNE.). 256/48 6. 3/3 points | Previous Answers SCalcET7 2.3.029. Evaluate the limit, if it exists. (If an answer does not exist, enter DNE.) -7/2 lim x 8 x 2 8 x x 2 7 x 8 . x 2 8 x x 2 7 x 8 = lim x 8 x 2 8 x x 2 7 x 8 lim x 8 x ( x 8 8 ) ( x 8 8 )( x + 1 1 ) = lim x 8 x ( x 8 ) ( x 8 )( x + 1) lim x 8 x \$\$ x +1 = 8/9 8/9 lim x 8 x x + 1 lim t 4 t 4 256 t 3 64 lim t 0 7 t 1 + t 7 t
10/16/15, 8:36 PM hw04S2.3 7. 5/5 points | Previous Answers SCalcET7 2.3.047. The signum (or sign) function , denoted by sgn, is defined by .
Page 3 of 10 (a) Sketch the graph of this function. (b) Find each of the following limits. (If an answer does not exist, enter DNE.) (i) 1 (ii) -1 (iii) DNE (iv) 1 sgn x lim x 0 + sgn x lim x 0 sgn x lim 0 |sgn x | lim 0 x x
10/16/15, 8:36 PM hw04S2.3 Page 4 of 10 8. 4/4 points | Previous Answers SCalcET7 2.3.048. Let (a) Find the following limits. (If an answer does not exist, enter DNE.) (b) Does exist?
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