What the fuck is the point of learning trig sub for integrals

>>8903392
that's not the kind of thing that's important for a mathematician at all. that's just a plug and chug method, and a simple one at this. so memorize it like everything else and keep chugging, my homosexual friend

>>8903396
I'm not saying it's important but if you're a mathematician I'd expect you to know how to do almost anything math including this. If you were a physicist I would have expected you to have learnt it too but maybe not have kept it memorized.

>>8903405
a mathematician would probably plug the integral into mathematica or something, and that's if you ever needed to calculate

it's a very simple trick though, and can be deduced if you're familiar with the technique of completing the square

in any case, what's the point with the thread? you didn't complain about memorizing menial shit up to this point, so keep going

>>8903392
>What the fuck is the point
it's an intelligence test, and you failed

>>8903392
It pops up in physics

I used this for deriving the equations of motion for a cantilever beam
I had to look it up because I forgot it but since i had seen it once i knew there was a nice trick

Programming toolpaths on a CNC Machine.

Aiming your rifle at long distance targets.

>"whats the point of"
>"only mathematicians compute integrals all day"
>seconday school level integrals in a college calculus course
>memoring substitutions

spotted the engineer

>>8903405
>if you're a mathematician I'd expect you to know how to do almost anything math including this
You're so far out of touch with what math is and what mathematicians do that's it almost funny.

>>8903392
>What the fuck is the point of learning trig sub for integrals unless you're going to become a mathematician

? Why? I'd just plug it in to a program to do it for me. If I had to know it by hand (for whatever reason), I'd be able to relearn it fast, yes.

>>8903405
>I'm not saying it's important but if you're a mathematician I'd expect you to know how to do almost anything math including this.

Lmao. No wonder you're struggling with trig substitutions. You're a complete brainlet.

>>8903392

Pretty important in electronics.

>>8903392
>What the fuck is the point of learning trig sub for integrals unless you're going to become a mathematician?

Astronomers and astrophysicists use it all the time

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112KB, 294x256px

gonna try to derail this thread a bit, but in a math degree it is required to memorize a fair bit of menial shit, is it not? and it's fine as long as you understand the bigger picture, yes?

>>8903685
Sure. For an oral exam (I had to have this in topology, fucking shoot me), you'd do just that. In general, remembering your definitions is more than enough. For example, for my real analysis exam, I needed only definitions (this was stressed by my professor as well).

>>8903392
Tell it to all wannabe game devs.

To be honest most integration could just be done on a computer; however, it's still good to understand how the methods work etc.

Mathematicians also hate plug and chug and tedious computations in general. It's all about proofs and elegant solutions.

>>8903392
nigga not even mathematicians use this shit. who knows why it's even taught

>>8903392
Trig subs come back a lot in physics

>>8903392
>Why learn anything beyond the basic common sense necessary for day to day tasks?
It's shit like this that makes me hate the idea of free college.