how do i write an algorithm

Develop M-file that can do followings

- Ask you to input the functions f1(x)=x.^2; f2(x)=x.^3; where x is -100, -99, -98........, 99, 100

- Find and plot fsum(x)=f1(x)+f2(x)

What i could come up with

ni=0

nf=100

for x=ni+nf;

f1(ni)=ni^2;

f2(nf)=nf^3;

fsum(x)=f1(ni)+f2(nf);

end

plot(fsum);

[KSSV]

Okay.....what is your attempt?

[Rik]

You can find guidelines for posting homework on this forum here.

[Antwone Goodwyn]

okay thank you

Answer 1

[Raj]

ub=input('Enter upper bound:')
lb=input('Enter lower bound:')
f1=zeros(ub-lb+1,1);
f2=f1;
fsum=f2;
for i=lb:ub
    f1(i+101,1)=i^2;
    f2(i+101,1)=i^3;
    fsum(i+101,1)=f1(i+101,1)+f2(i+101,1);
end
fsum
plot(fsum)

Always post your attempt (even if wrong) while posting homework questions.

[madhan ravi]

Posting a complete solution is not recommended.

Answer 2

[Antwone Goodwyn]

i apologize. i am new to the MatLab community. However, thank you a lot.