I have an Ordinary Differential Equation as follow: dv/dt-av^2-b=0 where a and b are constants how to solve this equation using Simulink?
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Your equation can be written as dv/dt=a*v*v+b.
Drag an Integrator block, the input is dv/dt, the output is v, use Constant block, Product block and Sum block to construct the equation and then you can run the simulation to solve the equation.
The solution is only numerical. You can vary the value of a, b and the initial value of v to see the effect.