need help(complex numbers)

[sinful berry]

I need to calculate the module of f(t) and the principak aargument of it it means the arg(f(t)) as this is argument €[-pi;pi]

[fleet perch]

j is the complex variable?

If you have z = r e^(jx), the modulus is r and the argument is x. So you need to write it in that form.

[sinful berry]

Yeah ik that

It s. Acomplex function

Last form is f(t)= (1/1+t)*e^(j(t+pi))

Thr module is 1/1+t

But what is the principal argument

Its the argument that € [-pi;pi]

And t€[0;4pi]