求y=2x^2+3(x
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求y=2x^2+3(x求y=2x^2+3(x求y=2x^2+3(xy逆=-√[﹙y-3)/2])(xy=根号下((x-3)/2)求反函数只须用y表示x再将x换成yy换成xy=2x+3/x-1xy-y=
求y=2x^2+3(x
求y=2x^2+3(x<-1)的反函数
求y=2x^2+3(x
y逆=-√[﹙y-3)/2] )(x
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