# what is the problem

20 views (last 30 days)
abdullah ali on 7 Apr 2021 at 17:54
x=0:0.1:6;
fx=exp(x)*sin^2*(x);
plot(x,fx,'linewidth', 1.5)
xlabel('x','fontweight','bold','Fontsize',15)
ylabel('fx','fontweight','bold','Fontsize',15)
set(gca,'fontsize',15)
set(gcf,'color','w')
title('fx vs x')
axis square

Star Strider on 7 Apr 2021 at 18:14
Two problems, actually.
Use element-wise muultiplication and exponentian operators:
fx=exp(x)*sin^2*(x);
↑ ← HERE
and use the correct call to the sin function and use element-wise exponentiation operator:
fx=exp(x)*sin(x)^2;
↑ ← HERE
producing the correct expression:
fx=exp(x).*sin(x).^2;
See Array vs. Matrix Operations for details. .

Alan Stevens on 7 Apr 2021 at 18:13
You need to replace fx by
fx=exp(x).*sin(x).^2;

naddin Jr. Julius Peter on 22 Apr 2021 at 13:56
x=0:0.1:6;
fx=exp(x)*sin^2*(x);
plot(x,fx,'linewidth', 1.5)
xlabel('x','fontweight','bold','Fontsize',15)
ylabel('fx','fontweight','bold','Fontsize',15)
set(gca,'fontsize',15)
set(gcf,'color','w')
title('fx vs x')
axis square