I always trobled in coupled nonlinear equations.Could you please help to plot this.

PGVTN.mw

How to rectify this error.

S-D_effect-RK.mw

Good Morning Sir. How to get the series of g(x).I couldn't get  it.

AGM.mw

Please help to plot this equation 

fwf-v.mw

My equation is

at  x=0

I got g'(0) in my previous equation,

,,

And all the parameters are mensioned in the worksheet.Then how to plot eta.Help me.

Thank you

FE-2.mw