y=In(x^2+根号下x^2+1)y=x^2sin1/xy=e^x+e^-x/xy=e^x(sin3x-3cos3x)y=sinf(x)

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y=In(x^2+根号下x^2+1)y=x^2sin1/xy=e^x+e^-x/xy=e^x(sin3x-3cos3x)y=sinf(x)
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y=In(x^2+根号下x^2+1)y=x^2sin1/xy=e^x+e^-x/xy=e^x(sin3x-3cos3x)y=sinf(x)
y=In(x^2+根号下x^2+1)
y=x^2sin1/x
y=e^x+e^-x/x
y=e^x(sin3x-3cos3x)
y=sinf(x)

y=In(x^2+根号下x^2+1)y=x^2sin1/xy=e^x+e^-x/xy=e^x(sin3x-3cos3x)y=sinf(x)