Integration Trick

Most integrands can be greatly simplified by using a trivial trigonometric identity like this video demonstrates.

Category:

Education

Tags:

• shahz
• pollardrho06
• math
• mathematics
• calculus
• integrals
• integrands
• integration
• tricks
• identity

[Yu2Kal]

This really great, I don't usually use trig identities much when integrating, or differentiating

[pollardrho06]

@Yu2Kal Thanks a lot. Keep watching.

[JakeBartlam]

thanks for the help

[pollardrho06]

@JakeBartlam Thanks a lot. Keep watching.

[nickrohn93]

thanks.

[MultiKnull]

Why my brain not understand anything? :(

[Marcuzzorox]

@atreyyu1 for restricted values it is!

[atreyyu1]

@supermiedos Yes, by the standard definition of arcsin, arcsin(sin(x))=x is true only for [-pi/2;pi/2].

[supermiedos]

@atreyyu1 i'm curious, why not? I always tought it was :/. Is it because of the restricted values?

[Pretoriafly]

Meanwhile, I'm in love with this music. <3

[atreyyu1]

Sadly arcsin(sin(x)) is not equal to x. Fail!

[d4rk4ng3lk]

this is wrong!!!!!!!!!!!!!!!!

[n7darren]

Wow thats something so simple yet I would never have thought of applying it for integration..

[ace0415]

WOW never thought of that. I thought that "pi/2 - x" trick was only useful back in the pre calc days