using Symbolics @variables x D = Differential(x) Z = 2.1309 + 0.0515x - 0.0009(x^2) ZZ = expand_derivatives(D(Z)) # Derivative is 0.0515 - 0.0018x println("Derivative is ",ZZ) # How to get the coefficient of x from equation ZZ # Question 1, how do I get the coefficient of x^0 which is 0.0515 #coefficient_x0 = ??? # Question 2, how do I get the coefficient of x^1 which is -0.0018 #coefficient_x1 = ??? # question 3, How do I find the root of the derivative which is 28.611 # derivative_root = ???
How to extract the coefficients of x from ZZ dynamically?