Mathematical calculations on input equation
显示 更早的评论
I want to write a program where user should be able to enter equation function of 1 variable. such as sin(t)-2t , but this equation is used in further calculations but i can't make this because the type of it is string. how can i solve this problem or change the type of input data to make mathematical calculations ?
回答（2 个）
bio lim
2016-11-28
What do you mean by function? Is it simply asking for a numerical input? If so,
f=input('enter input num\n')
4 个评论
Mohamed ahmed
2016-11-28
bio lim
2016-11-28
Then you can do it using str2func
f = input('Enter the function:\n', 's');
fh = str2func(['@(t)' f]);|
Let's check it.
Enter the function:
2*t + 3*t
>> fh(2)
ans =
10
Patrik Matta
2021-3-11
Hi, I would like user to input function i.e. x^2 + 3*y^3 and then ask user for the value of x and y and get the value of the function for x and y. I have been looking foor an advice on various sites but nothing has worked for me. I have MATLAB R2020b.
Steven Lord
2021-3-11
Use str2func. See bio lim's comment from November 28, 2016 for an example.
prinesh patel
2020-5-6
0 个投票
how can i get this equation on matlab and then get the answer or any value of (t)
q(t)= (6.25* 10^9)/(t+500)^3
类别
在 帮助中心 和 File Exchange 中查找有关 App Building 的更多信息
2016-11-28
2021-3-11
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!
Translated by 
