I'm given these variables
target velocity
target acceleration
target position (XYZ)
missile velocity
missile acceleration
missile position (XYZ)

I believe I calculated line of sight correctly (rotation vector = R(range) cross product Vr(velocity) / R dot product R), but the thing I'm ripping my hair out over is calculating fucking missile guidance via pronav with it.
This is the equation I'm using
Commanded Acceleration = N(constant) * Vc * LOS_Rate + ( N * Nt ) / 2

I've already looked at youtube and the wikipedia page for equations but they don't work and I can't get them to work even if I plug everything in. How the everloving fuck am I supposed to get my missile to receive guidance?

Picrel is a equation I see that makes zero fucking sense on how to solve it, I already tried googling what the fuck the || around variables means but it just returns nothing

and before you go
>hurr durr watch this literalwho youtube course on le physics course!!
shut the fuck up, equations should work regardless of me not knowing how the fundamentals behind them work, I'm not here to learn why it works, I'm here to learn why the fuck it isn't working and giving me a output vector.