Finding the 1th Order Derivative of Function sinx/(1+tanx) on x
    Finding the 1th Order Derivative of Function ln[(3+x)/sqrt(9-x^2)] on x
    Finding the 1th Order Derivative of Function k/(1+(x/c)^b) on x
    Finding the 2th Order Derivative of Function k/（1+x/c）^b on x
    Finding the 1th Order Derivative of Function (6+x+y)^2+(2−3x−3y−xy)^2 on x
    Finding the 1th Order Derivative of Function （6+x+y）^2+(2-3x-3y-xy)^2 on x
    Finding the 1th Order Derivative of Function -4x^4+2x^2 on x
    Finding the 1th Order Derivative of Function e^(-1*x^2) on x
    Finding the 1th Order Derivative of Function ln（x+（x^2 + 1）^(1/2)） on x
    Finding the 1th Order Derivative of Function exp(cos(27*x*x + 27*t*t +8*pi- 24))*(x*x/2 + 1/2)*(t*t/2 + 1/2) on x
    Finding the 1th Order Derivative of Function sqrt(x+2)*(3-x)^4/(x+1)^5 on x
    Finding the 1th Order Derivative of Function 3lnx-1/x on x
    Finding the 1th Order Derivative of Function (a-b)/b on a
    Finding the 1th Order Derivative of Function (a-b*c)/(b*c) on b
    Finding the 1th Order Derivative of Function aarctan((t^2 -1)/(2t))-((2at)/((t^2)+1)) on t
    Finding the 1th Order Derivative of Function t-1/t on t
    Finding the 1th Order Derivative of Function a*arctan(1/2(t-1/t)) -((2at)/((t^2)+1)) on t
    Finding the 1th Order Derivative of Function (t^2-1)/(t^2+1) on t
    Finding the 1th Order Derivative of Function (t*t-1)/(t*t+1) on x
    Finding the 1th Order Derivative of Function arctan((t^2 -1)/(2t))-((2at)/((t^2)+1)) on t

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