Giúp mk với Fxuycx7rxx7x7x7tx0ux7r7x7t7tt8

Question

Giúp mk với
Fxuycx7rxx7x7x7tx0ux7r7x7t7tt8
giup-mk-voi-fuyc7r777t0u7r77t7tt8

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Thiên Thanh 5 years 2021-05-17T02:57:52+00:00 2 Answers 25 views 0

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  1. ngochoa
    0
    2021-05-17T02:59:19+00:00
    Reply

    Bạn xem hình

    giup-mk-voi-fuyc7r777t0u7r77t7tt8

  2. minhkhue
    0
    2021-05-17T02:59:45+00:00
    Reply

    Đáp án:

     $I=2$

    Giải thích các bước giải:

     Ta có:

    $\begin{array}{l}
    \mathop {\lim }\limits_{x \to 1} \dfrac{{f\left( x \right) – 16}}{{x – 1}} = 24\\
     \Rightarrow \mathop {\lim }\limits_{x \to 1} \left( {f\left( x \right) – 16} \right) = 0\\
     \Rightarrow f\left( 1 \right) – 16 = 0\\
     \Rightarrow f\left( 1 \right) = 16
    \end{array}$

    Lại có:

    $\begin{array}{l}
    I = \mathop {\lim }\limits_{x \to 1} \dfrac{{f\left( x \right) – 16}}{{\left( {x – 1} \right)\left( {\sqrt {2f\left( x \right) + 4}  + 6} \right)}}\\
     = \mathop {\lim }\limits_{x \to 1} \dfrac{{f\left( x \right) – 16}}{{x – 1}}.\mathop {\lim }\limits_{x \to 1} \dfrac{1}{{\sqrt {2f\left( x \right) + 4}  + 6}}\\
     = 24.\dfrac{1}{{\sqrt {2.16 + 4}  + 6}}\\
     = 2
    \end{array}$

    Vậy $I=2$

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Giải phương trình 1 ẩn: x + 2 - 2(x + 1) = -x . Hỏi x = ? ( )