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

Toán Lớp 12: mn gải giúp mình đạo hàm hàm1/2*x^2* (2lnx-3)

Toán Lớp 12: mn gải giúp mình đạo hàm hàm1/2*x^2* (2lnx-3)

Comments ( 2 )

  1. $y=\dfrac{1}{2}x^2(2\ln x-3)$
    $=\dfrac{1}{2}x^2.2\ln x-3.\dfrac{1}{2}x^2$
    $=x^2\ln x-\dfrac{3}{2}x^2$
    $y’=2x\ln x+x^2.\dfrac{1}{x}-\dfrac{3}{2}.2x$
    $=2x\ln x+x-3x$
    $=2x\ln -2x$
    $=2x(\ln x-1)$

  2. Đáp án:
     
    Giải thích các bước giải:
     

    toan-lop-12-mn-gai-giup-minh-dao-ham-ham1-2-2-2ln-3

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