求导,y=(1-x^2)/sinx

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求导,y=(1-x^2)/sinx求导,y=(1-x^2)/sinx求导,y=(1-x^2)/sinx(2xsinx-cosx+x^2cosx)/sin^2(x)y''=((-2x)sinx-cosx(

求导,y=(1-x^2)/sinx
求导,y=(1-x^2)/sinx

求导,y=(1-x^2)/sinx
(2xsinx-cosx+x^2cosx)/sin^2(x)

y'=( (-2x)sinx - cosx(1-x^2) )/( (sinx)^2 )