How do i get the arg(A(j)) and I A(j) I of an equation?

I have the following equation of A= ((1+2j) / ((6j^4)+(8j^3)+(2j^2)+(7j)+2 ) and need to get it in the terms of A(j) and arg(A(j))

I'm a beginner in matlab and am still not sure of the code for this.

Answer 1

[Mischa Kim]

Jey, use abs(A) and phase(A) (or angle(A)):

 A = (1+2j)/((6j^4)+(8j^3)+(2j^2)+(7j)+2);
 abs(A)
 ans =
   0.001609781751232
 phase(A)
 ans =
   1.479232834161942
 angle(A)
 ans =
   1.479232834161942