Recent content by Fritz

I was trying to solve a 1st order D.E. and couldn't solve this: ln 1/[(y^2)-1] I know the answer is 1/2 ln[(y-1)/(y+1)], but could figure out how this is so. Also, I don't understand what method you'd use to get from y = Ae^-4x + Be^-6x to d2y/dx2 +10 dy/dx +24y + 0. I can eliminate the...

Thank you my friend. I get it now.

We don't do differential equations until the next symester. I'll be back tomorrow to check this thread (I have to go home now).

I'm a bit confused. Here's our syllabus: FUNCTIONS OF ONE REAL VARIABLE (five lectures) Definition, domain, range; odd, even, periodic; polynomials, factorisation; rational functions, partial fractions; exponential and logarithmic functions; circular and hyperbolic functions; inverse...

does the integral of dx = x?

ds/dt = v, => dx = vdt, => integral between x and x(subscript 0) of dx =v. integral of dt between x and x(subscript 0) => x = x(subscript 0) + vt Is this correct?

^ I've done normal differentiation and partial differentiation. Is that what you mean?

This calculus notation is so damn confusing.

Please spoon-feed me.

Can you explain it step by step?

I still don't understand. How do you get from ds/dt = v (a constant) to integral(dx) = v. integral(dt) to x = x(subsript 0) +vt?

Uniform motion: dv/dt = 0 ds/dt = v (a constant) integral(dx) = v. integral(dt) => x = x(subsript 0) +vt ? Uniform accelerated motion: dv/dt = constant Equations of motion are: dv/dt = a => v = v(subscript 0) + a.t ? dx/dt = v => x = x(subscript 0) + v(subscript...

Doesn't anyone know?

^ That was great! Thank you.

Surely the rotating space stations could rotate at the necessary angular velocity to provide us with sufficient centripetal acceleration? They could use low doses of anabolic (low androgenic) steroids to prevent muscle wastage. Side effects would be minimal (because of the low doses and the...