Feb 26, 2016 · Homework Statement This formula we've been using recently, I don't understand where it comes from. Homework Equations T = 2pi * sqrt (m/k) The Attempt at...

Apr 22, 2010 · Hi, I'm not sure how to word my question, so I will just state it upfront. What is the importance of \\upsilon = \\sqrt{2gh} in physics? I've seen it in escape velocity problems, …

Jun 28, 2009 · Erg, so there was a tiny treatment of algebraic numbers in Spivak's calculus text, but basically I have forgotten that chapter. But I think there was a trivial exercise where you …

Aug 6, 2015 · I was doing the differential equation of simple harmonic motion. At a time, to bring the equation, it simply said k/m=ω2 How does it come? Is there any proof?

Oct 20, 2014 · I see many people saying that the imaginary number squared is -1, like so: i = sqrt (-1) i2 = sqrt (-1)*sqrt (-1) = (sqrt (-1))2 = -1 But, what about this...

May 15, 2015 · Happened to pass someone wearing a t-shirt today with the logo: F/C^2(sqrt(-1))PV/nR Could you explain to me what this means? Thank you

Jun 17, 2014 · The problem is that you have left out the fact that if x = 2y then dx = 2dy. Hence your solution is a factor of 2 too big. Another way to do this is: ∫ 0 1 y 2 4 y 2 + 1 d y = 2 ∫ 0 1 y …

Sep 12, 2012 · Homework Statement Prove that √x+y ≤ √x + √y for all x,y ≥ 0 Homework Equations The Attempt at a Solution square both sides: x + y ≤...

Sep 12, 2018 · Homework Statement "Let ##f:ℝ^2\rightarrow ℝ## be defined by ##f (x,y)=\sqrt {|xy|}##. Show that ##f## is not differentiable at ## (0,0)##." Homework...

Feb 17, 2017 · Homework Statement When I was in high school I was thaught that the period of a simple harmonic oscillation (mass on spring, ball on pendulum, etc) was equal to ##T=2\\pi …