I need help plotting using this while loop

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Daabir Momin
Daabir Momin 2023-3-27
评论： Daabir Momin 2023-3-27
Ran in:
this is how my code looks like currently, I am generating the correct munbers for the fuction but it is not plotting anything. Please Help.
xx = linspace(-5,9,85);
w=0
w = 0
while w<85
w=w+1;
fxx = ((xx(w)+1)^2)./(2+5*xx(w));
end
plot(xx,fxx)

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VBBV
VBBV 2023-3-27
Ran in:
xx = linspace(-5,9,85);
w=0
w = 0
while w<85
w=w+1;
fxx(w) = ((xx(w)+1)^2)./(2+5*xx(w));
end
plot(xx,fxx)
  2 个评论
VBBV
VBBV 2023-3-27
Ran in:
Use an counter to create array for the variable you want to plot. if you use
xx = linspace(-5,9,85)
xx = 1×85
-5.0000 -4.8333 -4.6667 -4.5000 -4.3333 -4.1667 -4.0000 -3.8333 -3.6667 -3.5000 -3.3333 -3.1667 -3.0000 -2.8333 -2.6667 -2.5000 -2.3333 -2.1667 -2.0000 -1.8333 -1.6667 -1.5000 -1.3333 -1.1667 -1.0000 -0.8333 -0.6667 -0.5000 -0.3333 -0.1667
w = 1; %e.g.
fxx = ((xx(w)+1)^2)./(2+5*xx(w)) % a single value
fxx = -0.6957
it will of course evaluate the equation inside the while loop but does not create an array of values but only a scalar value. Read more about plot function in This link
Daabir Momin
Daabir Momin 2023-3-27
Neat! That worked, thank you for the explanation.

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