Recent content by 0tt0UK

ooh.. ok! thank you all for your help

thx sylas.. what would you get when multiplying (30-x2)0.5 by (2+x) or any (a+b)? An exponent, it would be ok. I cannot do it with the square root.

(a+b)^2 is ok but what to do when the exponent is square root ? That is what I don't get, the expansion! (2+x)\sqrt{30-x^2}

(a+b)^2 = (a+b)(a+b)

Yes I understand that, ta. But what would be the multipication between both? That is what I don't get..

thx sylas that is what I thought but I wasn't sure.. so if I had to multiply that by let's say (2+x). What would happen to the square root (1/2)? Add the exponents due to the multiplication (1 + 1/2 = 3/2)?

Hi all, I am reading about trigonometry and pythagoras.. I found this (30-x2)1/2 Would it be the same as (sqrt30 - x) ?? Is there any way to simplify it? thanks in advance

- ln (Vin - Vc) + const thanks very much Mark44

right!? so how would you solve \int \frac{1}{Vin - Vc}dVc ?? Would you differentiate 1/Vin-Vc in function of Vc and then integrate the result? sorry I still don't understand the "-" on the right side of the eq. thanks

du in function of Vc ? du = -1 ? is that right?

Integration Homework Statement Hi everyone, I'm new here. This is my first post. I found physicsforums when researching on google a solution for a doubt I've had when trying to solve rc step response. Basically, the RC analyse showed at...