Finding the 1th Order Derivative of Function （x+2/x+1）^（x+1） on x
    Finding the 2th Order Derivative of Function 9x^2; on x
    Finding the 1th Order Derivative of Function (1-x)^2 + 100*(1-x^2)^2 on x
    Finding the 1th Order Derivative of Function ln(1+tanx) on x
    Finding the 1th Order Derivative of Function (4/3x+1)/(x^2-4/3x) on x
    Finding the 1th Order Derivative of Function (x^2+1)/(x^2-4/3x) on x
    Finding the 1th Order Derivative of Function -y/(x+y)+ln(x+y) on x
    Finding the 1th Order Derivative of Function e^（-3x） on x
    Finding the 1th Order Derivative of Function （n+1/n）^(1/2) on x
    Finding the 1th Order Derivative of Function -3x on x
    Finding the 1th Order Derivative of Function 2arctan（x/2） on x
    Finding the 1th Order Derivative of Function 4a^3 on x
    Finding the 1th Order Derivative of Function lnx+4/lnx on x
    Finding the 1th Order Derivative of Function e*x*e^xlnx-e*x+2e^x on x
    Finding the 1th Order Derivative of Function (x∧2+a∧2)e∧(-arctan(a/x)) on x
    Finding the 1th Order Derivative of Function (x∧2+y∧2)e∧(-arctan(y/x)) on x
    Finding the 1th Order Derivative of Function (x∧2+y∧2)e∧(-arctany/x) on x
    Finding the 1th Order Derivative of Function -arctan(y/x) on x
    Finding the 1th Order Derivative of Function （x^2+y^2)*sin1/（x^2+y^2)^0.5 on x
    Finding the 1th Order Derivative of Function （x^2+y^2)*sin1/（x^2+y^2)^1/2 on x

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