Bài 102415

Question

Tìm các giới hạn
a) $\mathop {\lim }\limits_{x \to 5} x$

b) $\mathop {\lim }\limits_{x \to 3} (x+2)$

c) $\mathop {\lim }\limits_{x \to 1} (5x-7)$

d) $\mathop {\lim }\limits_{x \to 4} (x+3)(x-2)$

e) $\mathop {\lim }\limits_{x \to 4} \frac{x+5}{x-2}$

f) $\mathop {\lim }\limits_{x \to 2} \sqrt{x+7}$

score 0 · Answer 1

Bình chọn tăng 0 Bình chọn giảm

a) $\mathop {\lim }\limits_{x \to 5} x =5$

b) $\mathop {\lim }\limits_{x \to 3} (x+2)=3+2 =5$

c) $\mathop {\lim }\limits_{x \to 1} (5x-7)$

$=5.7-7=28$

d) $\mathop {\lim }\limits_{x \to 4} )(x+3)(x-2)=$
$=(4+3)(4-2)= 24$
e) $\mathop {\lim }\limits_{x \to 4} \frac{x+5}{x-2}=\frac{4+5}{4-2}=\frac{9}{2}$

f) $\mathop {\lim }\limits_{x \to 2} (x+7)=7+2=9$

Vậy $\mathop {\lim }\limits_{x \to 2}\sqrt{x+7}=\sqrt{9}=3$

Bài 102415

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Bài 102415

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