Finding the 1th Order Derivative of Function xlnx/ex on x
    Finding the 1th Order Derivative of Function sin(u)/((1+r^2-2*r*cos(u))^(1/2)) on u
    Finding the 1th Order Derivative of Function vx/R on x
    Finding the 1th Order Derivative of Function a*sin(t)/((1+r^2-2*r*cos(t))^(1/2)) on t
    Finding the 1th Order Derivative of Function e^x*(x-1)/(x+1) on x
    Finding the 1th Order Derivative of Function ln(tan(3x)) on x
    Finding the 1th Order Derivative of Function sin(t)/((1+r^2-2*r*cos(t))^(1/2)) on t
    Finding the 1th Order Derivative of Function tan（sinx）－sin（tanx） on x
    Finding the 1th Order Derivative of Function tanx-sinx on x
    Finding the 1th Order Derivative of Function g-sinx on x
    Finding the 1th Order Derivative of Function (sqrt(9+x^2)*x)/(3+x) on x
    Finding the 1th Order Derivative of Function ln（-2x） on x
    Finding the 4th Order Derivative of Function sin114514; on x
    Finding the 1th Order Derivative of Function sin114514 on x
    Finding the 1th Order Derivative of Function sinx+2cos（10x） on x
    Finding the 1th Order Derivative of Function y+4x+b on x
    Finding the 1th Order Derivative of Function 2cos(2x+1) on x
    Finding the 1th Order Derivative of Function 2x^2+x+1 on x
    Finding the 4th Order Derivative of Function sinx/x; on x
    Finding the 1th Order Derivative of Function sinx/x; on x

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