Lim/x-->3 x^2 + 4x - 12 / x-2 How do I find the limit ?

2015-08-31 4:06 pm

回答 (2)

2015-08-31 4:18 pm
lim (x² + 4x - 12)/(x - 2)
x-->3

factor the numerator...(x + 6)(x - 2)
common factor in the numerator and denominator...(x - 2)/(x - 2)

lim (x + 6) = 9
x-->3

EASY !!
2015-08-31 4:25 pm
limit [(x^2+4x-12)/(x-2)]=
x->3
limit [(x+6)(x-2)/(x-2)]=
x->3
limit (x+6)=9
x->3


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