Buccal
Step 1: Understanding effervescent tablets. - Effervescent tablets are designed to dissolve in water before consumption. - They release carbon dioxide when dissolved, helping the drug to dissolve quickly.
Step 2: Explanation of incorrect options. - (A) Modified release: Refers to tablets that release the drug over time, not requiring dissolution in water.
- (B) Oral disintegrating: These dissolve in the mouth, not in water.
- (D) Buccal: Placed between the cheek and gum for absorption, not dissolved in water.
Step 3: Selecting the correct option. Since effervescent tablets are dissolved in water before ingestion, the correct answer is (C) Effervescent.
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.