Finding the 1th Order Derivative of Function cos（πx）/1+x*2 on x
    Finding the 1th Order Derivative of Function （e^x）^2;; on x
    Finding the 1th Order Derivative of Function sinx/(x(cosx+2)) on x
    Finding the 1th Order Derivative of Function sinx(xcos(x)+2x) on x
    Finding the 1th Order Derivative of Function six/(x(cosx+2)) on x
    Finding the 2th Order Derivative of Function ln(x+sqrt((1+x^2)) on x
    Finding the 1th Order Derivative of Function 4a/(t*d^2) on a
    Finding the 1th Order Derivative of Function -2/5*e＾(-5/2*x) on x
    Finding the 1th Order Derivative of Function ta^2/4 on a
    Finding the 1th Order Derivative of Function a/4 on b
    Finding the 1th Order Derivative of Function a/b on a
    Finding the 1th Order Derivative of Function (x^2+x)/(x^2+1) on x
    Finding the 1th Order Derivative of Function 15*(cos(t))^2*sin(t) on t
    Finding the 1th Order Derivative of Function 5*3*cos(t)^2*sin(t) on t
    Finding the 1th Order Derivative of Function x+x; on x
    Finding the 1th Order Derivative of Function x; on x
    Finding the 1th Order Derivative of Function arctan1/14; on x
    Finding the 1th Order Derivative of Function -Pi/4*2*arctan(1) on x
    Finding the 1th Order Derivative of Function 2arctan((x+1)^(1/2)/(1 − x)^(1/2)) + (1 − x)^(1/2)* ( x + 1)^(1/2) + 1 on x
    Finding the 1th Order Derivative of Function lnx-ax-1 on x

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