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1. ### Using the Routh-Hurwitz Criterion, test the stability conditions of the following closed-loop systems.?

...c. The system is stable.All roots are on the LHS of the real axis!!

2 Answers · Science & Mathematics · 21/04/2011

2. ### integration ∫(x-1)/((x^4-1)^2)? I want all setup.?

...)/ (x^2+1)^2 Then multiply all terms by the denominator of the LHS, and equate coefficients for each separate power of x. I admit this...

2 Answers · Science & Mathematics · 23/12/2013

3. ### How to calculate f (t) = cos at, t >= 0 by the definition of Laplace?

...st) ] dt ADD the integral from the RHS to the original integral on the LHS, obtaining: [1 + (a^2/s^2)] * F(s) = 1/s + [(a/s^2)*(sin at)*e^(-st...

3 Answers · Science & Mathematics · 11/08/2014

4. ### Please solve the following differential equation: D^2y = 3sinx - 4y?

...or particular solution of the complete (non-homogeneous) equation. Try y=sinx , then the LHS: y" + 4y = -sinx +4.sinx = 3sinx so the solution fits! giving the general...

3 Answers · Science & Mathematics · 29/12/2012

5. ### HELP establish Trig Identity: 1-2cos^2 theta/ sin theta cos theta...?

...x) - cos(x)/sin(x) = tan(x) - cot(x) But now it's perfectly clear that the LHS equals the RHS.

1 Answers · Science & Mathematics · 23/04/2013

6. ### How to find dy/dx?? calculus 1?

... obvious, just divide RHS by the bracketed coefficient from the LHS.

1 Answers · Science & Mathematics · 25/11/2013

7. ### Fluid Mechanics Help?

...gal )( 10 gal/min ) dQ/dt = -10Q / 55 Move Q to the LHS and then integrate ∫ 1/Q dQ = -10/55 ∫ dt ln Q = -10t/55...

2 Answers · Science & Mathematics · 11/12/2009

8. ### How to prove this Boolean theorem?

...since, 1+any = 1: 1+C =1, 1+B=1 } =AB+A'C = LHS

2 Answers · Science & Mathematics · 27/09/2012

9. ### can you please prove these trigonometric identities?

... ) x (sin²x + cos²x) =(cos^4) (X) - (sin^4) (x) d) LHS: cot X sin 2X=(cosx÷sinx) x (2sinxcosx) =2cos²x...

3 Answers · Science & Mathematics · 07/10/2011

10. ### I need to know this equation:?

...condition. E.g set a = 0, then b=1 and the value of z = ib = i. The LHS of the given equation is then (-3+i0) of which the absolute value = 3...

1 Answers · Science & Mathematics · 05/12/2010