over 10 years ago by Ted Sun
I might have missed something but when I follow the tutorial (on 5'30'') to set the "expression" of the X vector for the little circle on the opposite side the component turns to red saying "Unknown variable encountered:f", which should comes from the expression of "f*-1". How can I fix it? Thanks
David Tol over 10 years ago
Ted Sun over 10 years ago
QI Miao over 10 years ago
Rodrigo Medina Garcia over 10 years ago