Mathematical calculations on input equation

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Mohamed ahmed
Mohamed ahmed 2016-11-28
评论： Steven Lord 2021-3-11
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 ?

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回答（2 个）

bio lim
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')
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Patrik Matta
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
Steven Lord 2021-3-11
Use str2func. See bio lim's comment from November 28, 2016 for an example.

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prinesh patel
prinesh patel 2020-5-6
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

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