How to create a variable input in Matlab R2020a Simulink?

I was trying to solve this y=a^2-3*b*a+Sqrt(b) in simulink, but I could not solve as in latest version there is no variable input.So plz help me out.

[hosein Javan]

you have one equation, are there two unknowns a and b? one of them must be constant.

Answer 1

[Jesús Zambrano]

Hi Pranav,

Make sure you copied the equation correctly. Seems that 'a' and 'b' are parameters, and the input is missing. Please check.