Finding the 1th Order Derivative of Function （2-x)*e^x/(x-1)^2 on x
    Finding the 1th Order Derivative of Function lnx/（mx^2） on x
    Finding the 1th Order Derivative of Function lnx/（x^2） on x
    Finding the 1th Order Derivative of Function 5^0.8 on x
    Finding the 1th Order Derivative of Function x/（x+2） on x
    Finding the 1th Order Derivative of Function x/（x-2） on x
    Finding the 1th Order Derivative of Function xsinxcoxtanx on x
    Finding the 1th Order Derivative of Function (x^2+(4+x^4)^0.5)*cosx on x
    Finding the 1th Order Derivative of Function (2*x^3)/(4+x^4)^0.5-2*x-2sinx on x
    Finding the 1th Order Derivative of Function (x^4+4)^0.5 on x
    Finding the 1th Order Derivative of Function xcosx+3*x on x
    Finding the 1th Order Derivative of Function (3.1-x)^2; on x
    Finding the 2th Order Derivative of Function （3-x）x^0.5 on x
    Finding the 1th Order Derivative of Function -（5-（x-1）^2）^(0.5)-2-x on x
    Finding the 15th Order Derivative of Function xxxxxxxx；nxxx on x
    Finding the 1th Order Derivative of Function [(1-lnx)/(1+lnx)]+(1/x) on x
    Finding the 1th Order Derivative of Function (1-lnx)/(1+lnx) on x
    Finding the 1th Order Derivative of Function sin（2x＋π/3） on x
    Finding the 1th Order Derivative of Function 2/2x＋1 on x
    Finding the 1th Order Derivative of Function k(sin0.5xcos0.5x^2+fcos0.5x^3)+l(cos0.5x(1-3sin0.5x^2)-3fsin0.5xcos0.5x^2) on x

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