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joyceheloisa
@joyceheloisa
July 2022
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Me ajude por favor preciso dos passos!
[tex] \lim_{n \to 9} \frac{x-9}{ \sqrt{x} -3} [/tex]
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fagnerdi
Oi Joyce :) Esse é o passo a passo. Nesse caso pode utilizar a racionalização. Lembre que (a+b)(a-b)= a² - b²[tex] \lim_{x \to 9} \frac{x-9}{ \sqrt{x} -3} . \frac{ \sqrt{x} +3}{ \sqrt{x} +3} = \frac{(x-9)( \sqrt{x} +3)}{( \sqrt{x})^2 - 3^2 } = \frac{(x-9)( \sqrt{x} +3)}{x-9} = \sqrt{x} +3 \\ \\ \lim_{x \to 9} \sqrt{x} +3 \\ \\ \lim_{x \to 9} \sqrt{9} +3 \\ \\ \lim_{x \to 9} 3+3 \\ \\ \lim_{x \to 9} 6[/tex]Hope you like it! :)
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5/(3+x)+2=3/(3-x) Preciso do passo a passo!
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