The Chebyshev optimality criterion in four bar link?

[kundan jha]

how to use the Chebyshev optimality criterion to the
second degree polynomial?

 

[Nidum]

Chebyshev optimality criterion

I understand that bit but what is the actual question about ?

 

[kundan jha]

I understand that bit but what is the actual question about ?

Actually its about reducing the structural error while designing the swinging block mechanism