how can I take numeric result

hi,

syms Phase(a,u);

phase(a,u)=(atan(a)-atan(1/a)*u*180/pi);

this returns

atan(3) - (18*atan(1/3))/pi

for

phase(3,0.1)

how can I take the numeric value not an expression

regards.

Answer 1

[Steven Lord]

Since the resulting symbolic expression does not contain any symbolic variables, just call double on it. If later you want to approximate a symbolic expression that does contain symbolic variables, call vpa on it instead or use subs to substitute values for the symbolic variables.

Answer 2

[madhan ravi]

phase=@(a,u)(atan(a)-atan(1/a)*u*180/pi)

phase(3,1) % a=3 & u = 1