Effortless Integration Help for cos^2(2y) | Get Expert Tips

Thread starter andrew410
Start date Feb 24, 2005
Tags

Integration

AI Thread Summary

The integral of 1/cos^2(2y) can be challenging, with users expressing difficulty in using u-substitution and integration by parts. The discussion highlights the need for expert tips to simplify the integration process. There is also a request for clarification on the differential of the tangent function. Overall, participants are seeking effective strategies for solving the integral. Expert guidance is encouraged to navigate this calculus problem.

Feb 24, 2005

andrew410

\int\frac{1} {cos^2(2y)} dy
I've tried u-subbing and integration by parts...and no luck...
It's been a while since Calc 2 and I need some help.
Any help would be great! thx! :)

Physics news on Phys.org

Feb 24, 2005

stunner5000pt

I don't think you can solve this by u-subsitution or i couldn't think that way because that owuld be too lengthy

Whats the Differential of Tan??

Feb 24, 2005

andrew410

thx...haha

Thread 'I've come across another fluid pressure problem I don't understand'

Neglect gravity other than that of water; neglect friction. F1=ρgsh=1000*10*1*(1+4)=50000 N; F1=ρgsh=1000*10*0.1*4=4000 N; F3=50000-4000=46000 N?

View full post »

Thread 'Variable mass system : water sprayed into a moving container'

Starting with the mass considerations #m(t)# is mass of water #M_{c}# mass of container and #M(t)# mass of total system $$M(t) = M_{C} + m(t)$$ $$\Rightarrow \frac{dM(t)}{dt} = \frac{dm(t)}{dt}$$ $$P_i = Mv + u \, dm$$ $$P_f = (M + dm)(v + dv)$$ $$\Delta P = M \, dv + (v - u) \, dm$$ $$F = \frac{dP}{dt} = M \frac{dv}{dt} + (v - u) \frac{dm}{dt}$$ $$F = u \frac{dm}{dt} = \rho A u^2$$ from conservation of momentum , the cannon recoils with the same force which it applies. $$\quad \frac{dm}{dt}...

View full post »

Thread 'Understanding Forces and their Vector Components'

I was told forces are vectors so they can be divided into x and y components, but what about the normal force or the force of static friction? do you divide those into x and y components if say you had a block that was lying on an angled surface?

View full post »