- °Brix is an arbitrary scale used in the sugar industry to measure the concentration of sucrose in an aqueous solution.
- °Baume is used for measuring the density of liquids.
- °API is used in the oil industry to measure the density of petroleum liquids.
- °Twaddle is a scale used for measuring the density of liquids, primarily in the chemical industry.
Conclusion:
The correct answer is °Brix, which is used in the sugar industry to measure the concentration of sugar.
A closed-loop system has the characteristic equation given by: $ s^3 + k s^2 + (k+2) s + 3 = 0 $.
For the system to be stable, the value of $ k $ is:
A digital filter with impulse response $ h[n] = 2^n u[n] $ will have a transfer function with a region of convergence.