Answer:
The complete Matlab code along with step by step explanation is provided below.
Matlab Code:
function Req=ParallelR(Number)
Number=input('Please enter the number of resistors: ');
if Number>10 | Number<=0
disp('Invalid input')
return
end
R=0;
for i=1:Number
r=input('Please enter the value of resistor: ');
R=R+1/r;
end
Req=1/R;
end
Explanation:
Parallel resistance is given by

First we get the input from the user for how many parallel resistors he want to calculate the resistance.
Then we check whether the user has entered correct number of resistors or not that is from 1 to 10 inclusive.
Then we run a for loop to get the resistance values of individual resistors.
Then we calculated the parallel resistance and keep on adding the resistance for N number of resistors.
Output:
Test 1:
Please enter the number of resistors: 3
Please enter the value of resistor: 10
Please enter the value of resistor: 20
Please enter the value of resistor: 30
ans = 60/11
Test 2:
Please enter the number of resistors: 11
Invalid input
Test 3:
Please enter the number of resistors: 0
Invalid input
Answer:Protects the local network from outside access
Explanation:Proxy is a type of serves as the mediator in computer network for connecting the network with the user system. These servers are responsible for maintaining the security against any unauthorized access in the system or internet,privacy and other functions.. It helps in protecting the whole network connection by taking the control at the servers .
Answer:
The word efficient denotes the ability to achieve a good goal toward a person, and effectiveness denotes reliable production or achievement.
Explanation:
Many people around the world can set efficient goals, that is, to influence or encourage other people to make good projects or changes in their lives, by example or simply teach them with patience and altruism.
In this way effectiveness will be seen, that is, the product or the achievement precisely when we observe how people undertake new projects in their lives