Help me !!! Please ????

Question

Help me !!!
Please ????
help-me-please

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Eirian 6 years 2020-10-14T11:30:31+00:00 2 Answers 125 views 0

Answers ( )

  1. Tryphena
    0
    2020-10-14T11:31:35+00:00
    Reply

    $x=3\ge 2$

    $\Rightarrow y=3+1=4$

    $x=-1<2$

    $\Rightarrow y=(-1)^2-2=-1$

    $x=2\ge 2$

    $\Rightarrow y=2+1=3$

  2. Amity
    0
    2020-10-14T11:32:07+00:00
    Reply

    $y = \begin{cases}x +1 \quad khi \quad x \geq 2\\x^2 -2 \quad khi \quad x < 2\end{cases}$

    +) $x = 3 > 2 \to y = 3 + 1 = 4$

    +) $x = – 1 \to y = (-1)^2 – 2 = -1$

    +) $x = 2 \to y = 2 + 1 = 3$

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