I AM ADDING THE f FUNCTION GIVEN IN PROBLEM 9.1 ANY HELP IS APPRECIATED PLEASE THANK YOU
cos(pi)=-1 and cos(2pi)=1.
Since period of cos function is 2pi, for every odd Odd value of n,
we'll get -1 and for every even value, we'll get +1. The value of
(n+1)/(n^2+2) goes on increasing with every n value.
Initially, at n=1, the value will be subtracted from 5, so we have 4.333 as result.
At n=2, even though the value of cos is positive, it will be added to initially calculated value 4.333. So we see a small increment in it and the answer is 4.833
At, n=3, again some value will be subtracted, since cos(3pi)=-1. So the result will be a lesser value than 4.833 but not as low as 4.333 since some value was added to it in the previous step.
So the results do make sense.
CODE
f=5; %assigning initilial value to f so as to start the
loop
N=input('\nEnter the value of N '); %assigning user input value to
variable N
for n=1:N %starting loop from n=1 incrementing to N by 1 every
time
f=f+((n+1)/(n^2+2))*cos(pi*n); %defining the function in terms of
n
end
fprintf('The value of f for N equal to %d is %0.10f\n',N,f)
%printing the results on screen
I AM ADDING THE f FUNCTION GIVEN IN PROBLEM 9.1 ANY HELP IS APPRECIATED PLEASE THANK...
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