int_1^2 sqrt(1 + (-e^(1/x)/x^3-e^(1/x)/x^2-(3 e^(1/x^3))/x^7-(2 e^(1/x^2))/x^5-(3 e^(1/x^3))/x^4-(2 e^(1/x^2))/x^3)^2)dx