3 For the compensation D(s) = 25 s + 1 s + 15 use Euler’s forward rectangular method to determine the difference equations for a
digital implementation with a sample rate of 80Hz. Repeat the calculations using the backward rectangular method and compare the difference equation coefficients.
X=width of the lake y=length of the lake. we set out this system of equiations x*y=9/20 x=y/5 we solve by sustitution method (y/5)*y=9/20 y²/5=9/20 y²=(5*9)/ 20 y²=2.25 y=√2.25=1.5
x=y/5 x=1.5/5=0.3
Solution: width of the lake=0.3 miles lenght of the lake=1.5 miles
