- #1
kwikness
- 17
- 0
I've never simplified an expression with a subtraction of radicals in the numerator. I've done a bit of reading and I'm guessing the method to use would be conjugation, but I'm not sure how that would let me solve for x. Thanks for any help.
[tex]\lim_{x\rightarrow 0} \frac{(\sqrt{x+5} - \sqrt{5})}x[/tex]
I'm also having trouble with these two limit estimations. I've worked with [tex]\Delta[/tex] before but never in a simplification.
[tex]
\lim_{x\rightarrow 0} \frac{2(x + \Delta x)-2x}{\Delta x}
[/tex]
[tex]
\lim_{x\rightarrow 0} \frac{(x + \Delta x^2) - 2(x + \Delta x) + 1 - (x^2 - 2x + 1)}{\Delta x}
[/tex]
[tex]\lim_{x\rightarrow 0} \frac{(\sqrt{x+5} - \sqrt{5})}x[/tex]
I'm also having trouble with these two limit estimations. I've worked with [tex]\Delta[/tex] before but never in a simplification.
[tex]
\lim_{x\rightarrow 0} \frac{2(x + \Delta x)-2x}{\Delta x}
[/tex]
[tex]
\lim_{x\rightarrow 0} \frac{(x + \Delta x^2) - 2(x + \Delta x) + 1 - (x^2 - 2x + 1)}{\Delta x}
[/tex]
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