0

Guest

Courses New

Solve integral of [(cos 2 2x) / cos 2 x ] dx

Solve integral of    [(cos 2 2x) / cos 2 x ]  dx

Grade:12

1 Answers

pratham ashish
9 Points
13 years ago
hi, {cos2x/cos(x)}^2 = {(2cos^2(x)-1)/cosx}^2 => {2 cosx-secx}^2 = {4(cosx)^2+(secx)^2-4} => {2{2(cosx)^2 -1} -2 +(secx^2)} => 2cos(2x)dx -2dx +9secx)^2dx => integral of {cos2x/cos(x)}^2 = integral of 2cos(2x)dx -2dx +9secx)^2dx = sin(2x) -2x +tan(x)+c.

Think You Can Provide A Better Answer ?

Other Related Questions on Integral Calculus

View all Questions »

View courses by askIITians

Design classes One-on-One in your own way with Top IITians/Medical Professionals

Click Here Know More

Complete Self Study Package designed by Industry Leading Experts

Click Here Know More

Live 1-1 coding classes to unleash the Creator in your Child

Click Here Know More

a Complete All-in-One Study package Fully Loaded inside a Tablet!

Click Here Know More