What is the derivative of sec((x^2)+3x)? Calculus Differentiating Trigonometric Functions Derivatives of y=sec(x), y=cot(x), y= csc(x) 1 Answer Salvatore I. Nov 13, 2016 tan(x^2+3x)/cos(x^2+3x)*(2x+3) Explanation: d/dx(1/cos(x^2+3x))=-(-sin(x^2+3x)/cos^2(x^2+3x)*(2x+3)) Answer link Related questions What is Derivatives of y=sec(x) ? What is the Derivative of y=sec(x^2)? What is the Derivative of y=x sec(kx)? What is the Derivative of y=sec ^ 2(x)? What is the derivative of y=4 sec ^2(x)? What is the derivative of y=ln(sec(x)+tan(x))? What is the derivative of y=sec^2(x)? What is the derivative of y=sec^2(x) + tan^2(x)? What is the derivative of y=sec^3(x)? What is the derivative of y=sec(x) tan(x)? See all questions in Derivatives of y=sec(x), y=cot(x), y= csc(x) Impact of this question 1739 views around the world You can reuse this answer Creative Commons License