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222-9+11+12:2*14+14 = ? ( )

Toán Lớp 11: Tìm max- min y=1/sin^2x+2sinx+2

Toán Lớp 11: Tìm max- min
y=1/sin^2x+2sinx+2

Comments ( 1 )

  1. Giải đáp:
     $y_{\min}=\dfrac{1}{5}$ khi $x=\dfrac{\pi}{2}+k2\pi\,\,(k\in\mathbb Z)$
    $y_{\max}=1$ khi $x=-\dfrac{\pi}{2}+k2\pi\,\,(k\in\mathbb Z)$
    Lời giải và giải thích chi tiết:
     

    toan-lop-11-tim-ma-min-y-1-sin-2-2sin-2

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222-9+11+12:2*14+14 = ? ( )

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