# Math Help - Newton-Raphson

1. ## Newton-Raphson

solve the equation completely:
4iz^3 + iz + 6 + 22i = 0 where i=(-1)^0.5
use a starting value of z initial = 1 + i

THANKS

2. Originally Posted by summna09
solve the equation completely:
4iz^3 + iz + 6 + 22i = 0 where i=(-1)^0.5
use a starting value of z initial = 1 + i

THANKS
i don't think you can have a number $\sqrt{-1}$
is this the whole question?

3. Originally Posted by summna09
solve the equation completely:
4iz^3 + iz + 6 + 22i = 0 where i=(-1)^0.5
use a starting value of z initial = 1 + i

THANKS
Where are you stuck in applying the algorithm?

Are you trying to create a fractal?

Originally Posted by arze
i don't think you can have a number $\sqrt{-1}$
is this the whole question?
Newton-Raphson works exactly the same in complex analysis as it does in real analysis - same derivatives, same formula ....