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Well the only reason people switched over to solid state was because of the advantages they had which can be found here... http://en.wikipedia.org/wiki/Transistor#Advantages_of_transistors_over_vacuum_tubes (it's for transistors but some can apply for most of the electronic components) here's...

thats a really good question which i havent actually thought about lol. the best reason i can think of is that when thermionic devices were phased out and solid state devices were implemented, engineers needed a way to manipulate currents. Manipulating currents would generate large amounts of...

"I used by parts with u=sin2(1/x) v'=x, then I got xsin2(1/x) + 2 int. 1/x.sin(1/x) dx" How were you able to get the int [1/x sin(1/x) dx] using the above variables? I'm assuming you made a mistake with labelling v=x as v'=x. If you let: u = sin^2(1/x) du/dx =...

cos2(1/x) = cos^2(1/x) - sin^2(1/x) = 1 - 2sin^2(@) .'. sin^2(1/x) = (1 - cos 2(1/x))/2 .'. int [sin^2 (1/x) dx] = int [1/2 dx] - int [(cos 2(1/x))2 dx] = x/2 - [(1/2).1/(-2/x^2).sin 2(1/x)] + C = x/2 +...

ok what about this one integral of [(x^2 + 3)/(x^2 + 9)^(1/2)] dx using trig substitution please thx Answer is x/2.sqrt(x^2 + 9) - 3/2.ln(sqrt(x^2 + 9) + x) + K .... dw i've got that too now

dw i got it now lol thanks for the help though riviet

oops i forgot to mention that i needed to solve it using trig substitution thx

Hey guys, can anyone do this question please... Integral of [x/(1-x^2)^(3/2) dx] sorry about the formatting thx

well if you look at the equation: root(cos^2@) This is the modulus of cos @ or the right side of the equation (cos @). So in other words, you can re-write the equation to be come... |cos@|=cos@ This is why you get LHS = 1 and RHS = -1

what do u mean by 0 /< pi/2

use integration

WTF IN THE WORLD?! omfg that's like called a compliment far out....

I would just like to point out that virtually ALL terrorism has stemmed from the hate that was created when the state of Israel was founded. Some of this hate is directed at America because they support them and they influenced other countries in the UN when they were asked to vote for Israel's...

you probably have STDs or HIV/AIDS because you got blood on your fingers which came from her vagina. The bacteria from the blood in that region are able to penetrate the thin skin under your finger nails. When blood from her vagina mixes with yours you get bad effects ranging from gangrene of...

im pretty sure that the Americans did give funding to Israel prior to 1967 because America only stepped in when Russia was supporting Egypt and other Arab state by giving them weapons to fight during the cold war. If you have any other proof that this was not the case then can i please see...

please castrate yourself so that stupid people like you can never be born

fuck yeah i'd go out with you

more like israel is very lucky to have shit loads of funding from the americans and their support

Re: Uranium i think its retarded because they're selling it to china and not india

yeah thats right... go analyse my response some more