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[DTube] Integral of ∫sin(2x)cos(5x)dx with Product to Sum Formula
In this video, we work through the integral of ∫sin(2x)cos(5x)dx. The first step when performing any integral is to see if we can simplify the integrand, which in this case is:
sin(2x)cos(5x)
Luckily, we can do this with a trigonometric identity called the product to sum formula:
sin(u)cos(v) = 1/2[sin(u+v) + sin(u-v)]
Thanks for watching. Please give me a "thumbs up" if you have found this video helpful.
Please ask me a maths question by commenting below and I will try to help you in future videos.
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Replies (9)
Yuhh sometimes it is really need to refresh how solve such tasks. Thank you for this short video.
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Great to see your post but way above my head.
I will ask my teacher about this tomorrow
Thanks @stephen-somers. Hope to catch up with you and @frobear soon.
Thanks @frobear. I'd love to hear your teacher's feedback!
That’d be great. Maybe time for another SEQ Steemup.
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