Calculator test

[AnnoyedOne]

As a student EE we also used the z representation of complex numbers per p69 of the HP-15C AFH.

Quote:In these definitions, a complex number is denoted by z = x + iy

That said in EE 'j' is used instead of 'i' (which is reserved for current).

In theory that made some of the math "easier" but as I recall it still got pretty "hairy" at times Fortunately mostly used in RF (Radio Frequency) work which I ignored like the plague and promptly forgot. Mostly HPFM (Hocus Pocus <a rude word> Magic) IMHO.

Fortunately the end result was usually a real number that solved an actual (vs theoretical) problem.

FYI the HP-15C will calculate (along with the 4 basic arithmetic operations)

Quote:1/z
e^z
10^z
ln(z)
log(z)
sin(z)
arcsin(z)
cos(z)
arccos(z)
tan(z)
arctan(z)
sinh(z)
arcsinh(z)
cosh(z)
arccosh(z)
tanh(z)
arctanh(z)

I'm not sure how many other calculators can do that. IMO most are only designed for HS level math these days.

A1