Other Answers (1)

1/(√x 2)
= 1/(√x 2) * (√x +2)/(√x +2)
= 1(√x +2) / [(√x 2)(√x +2)]
= (√x +2) / (x  4)
1/(√x 2)  4/(x4)
= (√x +2) / (x  4)  4/(x4)
= (√x +2 4) / (x  4)
= (√x 2) / (x  4)
= (√x 2)(√x +2) / [(x  4)(√x +2)]
= (x  4) / [(x  4)(√x +2)]
= 1/(√x +2)
Therefore
lim x→4 1/(√x 2)  4/(x4)
= lim x→4 1/(√x +2)
= 1/(√4+2) = 1/(2+2) = 1/4
Calculus 1 help, lim as x approaches 4 of (1/((sqrtx)2))  (4/(x4))?
i know the answer is 1/4 but i don't know how to get it. help if you can please.
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