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knowLittle
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Homework Statement
Determine if limit exists:
## \left( !x_{,y}^{im}\right) \rightarrow \left( 1,2\right) =\dfrac {xy-2x-y+2} {x^{2}-2x+y^{2}-4y+5} ##
Above is just lim (x,y)-->(1,2)
Homework Equations
The Attempt at a Solution
## c_{y}x=a,y\rightarrow b ##
## \lim _{\left( 1,y\right) \rightarrow \left( 1,2\right) }\dfrac {y-2-y+2} {1-2+y^{2}-4y+5}=\dfrac {0} {y^{2}-4y+4} ##
Why wasn't L'Hospital used?