> a =35, b = 3, c = 28, d1 = 1, d2 = 8,
> x0 = 1, y0 = 1, z0 = 30,
```
def multi_chen(a, b, c, d1, d2):
u = lambda z: d1*z - d2*sin(z)
return lambda x, y, z:(
a*(y - x),
(c - a)*x - x*u(z) + c*y,
x*y - b*z
)
```
## References
> X. Liu, X. Shen, & H. Zhang, "MULTI-SCROLL CHAOTIC AND HYPERCHAOTIC ATTRACTORS GENERATED FROM CHEN SYSTEM," IJBC, Vol.22, No.2, (2012) 1250033.