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## aiskarl Group Title find constan a and b 2 years ago 2 years ago Edit Question Delete Cancel Submit

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1. aiskarl
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$\lim_{x \rightarrow 0} \frac{ \sqrt{ax+b}-1 }{ x }$ =1

• 2 years ago
2. Stacey
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Have you tried rationalizing the fraction? (multilplying the both the numerator and denominator by [sqrt(ax+b) - 1] )

• 2 years ago
3. Stacey
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It's not really rationalizing since it would put a radical in the denominator, but doing that often makes limits easier to solve.

• 2 years ago
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$\frac{ ax+b-1 }{ x(\sqrt{ax+b}+1) }$

• 2 years ago
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