If C(s) is Laplace Transform of output and R(s) is Laplace transform of input.
The correct statement(s) is/are:
1
Forward paths: 1/s2, s
2
Loops: - s2, -1/s, -s2, - 1/s
3
\(\rm T(s) = \frac{s^3 - 1}{2s^4 + s^2 + 2s}\)
4
\(\rm T(s) = \frac{s^3 + 1}{2s^4 + s^2 + 2s}\)