{"id":11260,"date":"2022-01-19T16:47:52","date_gmt":"2022-01-19T21:47:52","guid":{"rendered":"https:\/\/blogs.mathworks.com\/simulink\/?p=11260"},"modified":"2022-01-24T08:54:02","modified_gmt":"2022-01-24T13:54:02","slug":"specifying-variable-values-using-mathematical-expressions","status":"publish","type":"post","link":"https:\/\/blogs.mathworks.com\/simulink\/2022\/01\/19\/specifying-variable-values-using-mathematical-expressions\/","title":{"rendered":"Specifying Variable Values Using Mathematical Expressions"},"content":{"rendered":"
Today I want to talk about variables, needed by a Simulink model, that are function of other variables.<\/span><\/div>
Let's take the simple example of a right triangle:<\/span><\/div>
\"\"<\/img><\/div>
For most Simulink users, if you have a model that requires the length of the hypotenuse or the area of this triangle, you will probably end up writing a script like the following:<\/span><\/div>
a = 3;<\/span><\/span><\/div><\/div>
b = 4;<\/span><\/span><\/div><\/div>
c = sqrt(a^2+b^2);<\/span><\/span><\/div><\/div>
area = (a*b)\/2;<\/span><\/span><\/div><\/div><\/div>
Then, in block parameters, you will use variables <\/span>c<\/span> and <\/span>area<\/span>:<\/span><\/div>
\"\"<\/img><\/div>
Unrelated side notes regarding the above screenshot:<\/span><\/div>