What is int 1+cos2x dx ? Calculus Introduction to Integration Integrals of Trigonometric Functions 1 Answer Leland Adriano Alejandro Jan 12, 2016 x+1/2sin 2x + C Explanation: if the given is int (1+ cos 2x) dx then int (1+ cos 2x) dx=int dx + 1/2int cos 2x 2*dx + C then x + 1/2 sin 2x + C Answer link Related questions How do I evaluate the indefinite integral intsin^3(x)*cos^2(x)dx ? How do I evaluate the indefinite integral intsin^6(x)*cos^3(x)dx ? How do I evaluate the indefinite integral intcos^5(x)dx ? How do I evaluate the indefinite integral intsin^2(2t)dt ? How do I evaluate the indefinite integral int(1+cos(x))^2dx ? How do I evaluate the indefinite integral intsec^2(x)*tan(x)dx ? How do I evaluate the indefinite integral intcot^5(x)*sin^4(x)dx ? How do I evaluate the indefinite integral inttan^2(x)dx ? How do I evaluate the indefinite integral int(tan^2(x)+tan^4(x))^2dx ? How do I evaluate the indefinite integral intx*sin(x)*tan(x)dx ? See all questions in Integrals of Trigonometric Functions Impact of this question 13924 views around the world You can reuse this answer Creative Commons License