4 holydays so far in this class

>4 holydays so far in this class
>teacher doesn't teach how to calculate arc length on this case
>put it on the test anyway
>?????
How the fuck do you even do this?
I tried to do it the way you normally do the '2ab' becomes - 1/2 so it can turn the 1 into 1/2 but I got stuck regardless.

Other urls found in this thread:

lmgtfy.com/?q=how to calculate arclenght
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This is how far I got with the method I tried to describe on the OP.

Wolframalpha got to the same integral. Maybe I'm on the right way.

>normally do when the '2ab' becomes, fix

I'm a human calculator aka Cleo
I'm on it

lmgtfy.com/?q=how to calculate arclenght

Nice to see you here, Cleo.
I'm counting on you.
It's not that simple.

substitute z = 2a sinh x
You get

Integral 1/sqrt(1+z^2)*1/sqrt(4a^2 + z^2) dz

>look up formula
>apply it
Yee Wiz what a fucking chore.
>But the integral is haaaard waaaa
Well put ut in sqt or in stack exchange.

Do it then, big guy.