fit2a -> b,c (different nj,ni)

pub/ptest/fit2b.f2t

+#!/usr/bin/env frida
+fm 18200 21 h
+ox! i/ni
+oz0! j/nj
+oy! z0+(1+z0/10)*x+sin(3*x*z0)/(x+z0+1)
+cc p0+p1*t
+cwc
+cg 1
+cf
+cp
+exit(0)

pub/ptest/fit2a.f2t → pub/ptest/fit2c.f2t

 #!/usr/bin/env frida
-fm 410 78 h
-ox! i
-oy! j+(1+j/10)*i+sin(3*i*j)/(i+j+1)
+fm 21 182 h
+ox! i/ni
+oz0! j/nj
+oy! z0+(1+z0/10)*x+sin(3*x*z0)/(x+z0+1)
 cc p0+p1*t
 cwc
-cp
-cf
-cp
 cg 1
 cf
 cp