Math - aps mhow
... 25. The sum of three numbers in G.P is 56. If we subtract 1,7,21 from these numbers in that order, we obtain an arithmetic progression. Find the numbers. 26. The mean and standard deviation of 20 observations are found to be 10 and 2 respectively. On rechecking it was found that an observation 8 wa ...
... 25. The sum of three numbers in G.P is 56. If we subtract 1,7,21 from these numbers in that order, we obtain an arithmetic progression. Find the numbers. 26. The mean and standard deviation of 20 observations are found to be 10 and 2 respectively. On rechecking it was found that an observation 8 wa ...
Mathematics of radio engineering
The mathematics of radio engineering is the mathematical description by complex analysis of the electromagnetic theory applied to radio. Waves have been studied since ancient times and many different techniques have developed of which the most useful idea is the superposition principle which apply to radio waves. The Huygen's principle, which says that each wavefront creates an infinite number of new wavefronts that can be added, is the base for this analysis.