1.

Evaluate the following lim_(xto1) (x^3 -1)/(x-1)

Answer»

SOLUTION :`lim_(xto1) (x^3 -1)/(x-1)`
`lim_(xto1)((x-1)(x^2+x+1))/(x-1)`
`limto(xto1)(x^2+x+1)`
1+1+1=3


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