Integral of sin(8x)cos(5x), calculus 2 tutorial

Integral of sin(8x)cos(5x),
trig integral with the product formula,
calculus 2 trig integrals,
Check out my 100 integrals for more integration practice for your Calculus 1 or calculus 2 class. • 100 integrals (world r...
----------------------------------------
🛍 Shop my math t-shirt & hoodies: amzn.to/3qBeuw6
💪 Get my math notes by becoming a patron: / blackpenredpen
#blackpenredpen #math #calculus #apcalculus

[@rayannevignolo3042]

Muito, muito, muito obrigada! Entendi mais com o seu vídeo do que com o professor da minha universidade (mesmo falando o mesmo idioma kkkk).

[@blackpenredpen]

You're welcome

[@soggy6645]

I would love to see a proof of the multiple angle formula you used in this video
It's useful as hell, but I have no idea how or WHY it even works. having that gap in understanding is .... unsettling for a calc student.

[@integrationbee2511]

Yes we should know the proof of this formula.
We know that
sin ( A + B ) = sin A cos B + cos A sin B ......................... (1)
and
sin ( A - B ) = sin A cos B - cos A sin B ......................... (2)
if we add (1) and (2)
we will get:
sin ( A + B ) + sin ( A - B ) = 2 sin A cos B
so
sin A cos B = (1/2) [ sin ( A + B ) + sin ( A - B ) ]
Raymond Chin In my channel there are a lot of nice integrals.

[@tonyhurtado8524]

you helped me a lot, several times thank you mate

[@danielponce89]

Dude! You absolutely KICK ASS! I'm serious. Please don't stop what you're doing! Thanks!

[@chasemclovin560]

you are a life savior

[@wise_math]

I think the quality/resolution of this video is better than the new videos?

[@cheyennevondrak7709]

Soooo helpful! Thank you so so so so so much!

[@duanedonaldson2262]

Do you have a problem just like this but using the integrate by parts to arrive at the solution?

[@gabrielespinosa5263]

my teacher is a dumbass but u are a glorious old greek god on maths ty boy

[@victorojo5397]

C'est génial. Merci beaucoup

[@laryssaoliveira5660]

Me salvou!!! Muito obrigada!!!

[@mrfjm]

Hi my brother. Nice job.

[@ronaldoseven5959]

Can you do integral of 1 / ( 3+cos^2(x) ) please?

[@norssinemary580]

Thanks man I love u

[@fajer7941]

thank you so much

[@naufalimezully2874]

arigato

[@Skaterschannel]

thank you!

[@viniciusbarbosa9633]

Muito bom! thanks

[@chasemclovin560]

I love you

[@sanjaytripathi3161]

Integrate 1/sin^7x + cos^7x

[@sateeshyadav4799]

Hindi me nhi padhane aata hai

[@reg-net8956]

Can this integral be done using the DI method and integration by parts?