Finding the 1th Order Derivative of Function ln(e3+x^3cosx) on x
    Finding the 1th Order Derivative of Function 5/(x^2+1) on x
    Finding the 1th Order Derivative of Function 5/x^2+1 on x
    Finding the 2th Order Derivative of Function Xsqrt（（x-1）（x-2）/（x-3）/（x-4）） on x
    Finding the 1th Order Derivative of Function Xsprt（（x-1）（x-2）/（x-3）/（x-4）） on x
    Finding the 1th Order Derivative of Function xsprt（（x-1）（x-2）/（x-3）（x-4）） on x
    Finding the 1th Order Derivative of Function (1-cosx)/1+sinx on x
    Finding the 1th Order Derivative of Function 0.2x/(x-30.3) on x
    Finding the 1th Order Derivative of Function ln3（1-2x） on x
    Finding the 1th Order Derivative of Function x^2-a*ln(1+x) on x
    Finding the 1th Order Derivative of Function √((75-12x)^2+(8x)^2); on x
    Finding the 1th Order Derivative of Function √(75-12x)^2+(8x)^2; on x
    Finding the 1th Order Derivative of Function ln(1+x)+ax^2-x on x
    Finding the 2th Order Derivative of Function x^2（x-1）^2（x-2）^2 on x
    Finding the 2th Order Derivative of Function 2x-1/（x＋1）^2 on x
    Finding the 1th Order Derivative of Function 2/（1＋1＋3/e^x） on x
    Finding the 1th Order Derivative of Function 2/（1＋1＋1/3e^x） on x
    Finding the 1th Order Derivative of Function 2/（1＋1＋3e^x/1） on x
    Finding the 1th Order Derivative of Function 2x-1/(x＋1)^2 on x
    Finding the 1th Order Derivative of Function 33 on x

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