Evaluate the following limits or state that they do not exis…

Evaluate the following limits or state that they do not exist. Justify your answers. (a) lim ( x , y ) → ( 1 , 0 ) ln x   –   y (b) lim ( x , y ) → ( – 2 , 1 ) 2 x 2 4 x + y   Type your final answers below and then submit pictures of your work afterward in order to receive full credit. (a) [BLANK-1] (b) [BLANK-2]