I need to know how to use the for command to calculate y=2/x

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Saif
Saif 2022-12-1
评论： Walter Roberson 2022-12-4
I am just now learning how to use for loops but I am unsure how to use it to solve an equation with two unknowns. I need to know how to use the for command to calculate y/2/x.

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回答（2 个）

Benjamin Thompson
Benjamin Thompson 2022-12-1
x = 1:10;
y = 2 ./ x;
Walter Roberson
Walter Roberson 2022-12-4
Ran in:
You should learn this pattern:
xvals = 1:0.5:10;
num_x = length(xvals);
y = zeros(num_x, 1);
for xindex = 1 : num_x
x = xvals(xindex);
y(xindex) = 2./x;
end
plot(xvals, y)
  1 个评论
Walter Roberson
Walter Roberson 2022-12-4
Ran in:
If you use this pattern where you loop over indices rather than over content then the content does not need to be in any particular order, and can contain duplicates. For example,
xvals = rand(1,20) * 2 - 1;
num_x = length(xvals);
y = zeros(num_x, 1);
for xindex = 1 : num_x
x = xvals(xindex);
y(xindex) = 2./x;
end
plot(xvals, y, '*')

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