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а) [tex] \lim_{x \to \ \sqrt{7} } \frac{x- \sqrt{7} }{ x^{2} -7} [/tex]
б)[tex] \lim_{x \to \infty} \frac{5 x^{3}+x-1 }{2 x^{3}+5 x^{2} } [/tex]
а) [tex] \lim_{x \to \ \sqrt{7} } \frac{x- \sqrt{7} }{ x^{2} -7} [/tex]
б)[tex] \lim_{x \to \infty} \frac{5 x^{3}+x-1 }{2 x^{3}+5 x^{2} } [/tex]
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б) (5+1/x^2-1/x^3)/(2+5/x)
lim=5/2