∫(3 cos(x) + cos(2x)) dx
Added by Silvia S.
Close
Step 1
The double angle formula for cosine is: $$\cos 2x = 2\cos^2 x - 1$$ Now, we can rewrite the integral as: $$\int \frac{3\cos x \cdot (2\cos^2 x - 1)}{4} dx$$ Show more…
Show all steps
Your feedback will help us improve your experience
Maitreya E and 84 other Calculus 1 / AB educators are ready to help you.
Ask a new question
Labs
Want to see this concept in action?
Explore this concept interactively to see how it behaves as you change inputs.
Key Concepts
Recommended Videos
$\int x \cos \left(3 x^{2}-1\right) d x$
$\int \sin 3 x \cos 2 x d x$
$\int \sin x \cos 3 x d x$
Recommended Textbooks
Calculus: Early Transcendentals
Thomas Calculus
Watch the video solution with this free unlock.
EMAIL
PASSWORD