MATLAB: How do i write an algorithm

algorithmhomework

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);

Best Answer

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.
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