Calculations using for loops

2 次查看（过去 30 天）
Jose Grimaldo
Jose Grimaldo 2020-3-6
评论： Sindar 2020-3-6
I want to perform the following calculations using for loops. I have assigned values to variables A and B. I want to calculate V, by plugging k=0:0.1:x and setting a condition inside the for loop. If k<=5 calculate V=(-A)(k)+(B*6) and else V=(-A)(k)+(B*6)+(A/B)(k). How can i make it work using for loops and how can i stored every value?
x=input('From zero, until what number do you want to calculate');
A=5;
B=2;
for k=0:0.1:x
if k<=5
V=(-A)*(k)+(B*6);
else
V=(-A)*(k)+(B*6)+(A/B)*(k)
end
V(k)=V;
end

请先登录，再回答此问题。

采纳的回答

Sindar
Sindar 2020-3-6
编辑：Sindar 2020-3-6
Two problems:
  • parentheses are not multiplication in matlab, you need *
  • you are trying to insert a variable into itself
Solution (edited for modified question):
x=input('From zero, until what number do you want to calculate');
A=5;
B=2;
kvec = 0:0.1:x;
for ind=1:length(kvec)
if kvec(ind) <= 5
V(ind)=-A*kvec(ind)+B*6;
else
V(ind)=-A*kvec(ind)+B*6+A/B*kvec(ind)
end
end
  2 个评论
Sindar
Sindar 2020-3-6
BTW, this can be done without loops or if statements:
V(1:5) = -A*(1:5)+B*6;
V(6:10) = -A*(6:10)+B*6+A/B*(6:10);
Sindar
Sindar 2020-3-6
(you can still do it without loops, think about how)

请先登录，再进行评论。

更多回答（0 个）

类别

在 Help Center 和 File Exchange 中查找有关 Loops and Conditional Statements 的更多信息

标签

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by