Question: how to plot multiple variables for system of nonlinear equations in maple?

hi everyone,

I need to plot a graph for system of nonlinear equations with multiple variables. 

here is some example of system nonlinear

f1=3.65a^2-2ac-7ad+3.65b^2+7bc-2bd-1.65a+6.22b+0.5=0

f2=13.22a^2-7ac+2ad+13.22b^2-2bc-7bd-6.22a-1.65b+0.24=0

f3=2c^3-2ac-7bc+2d^2+7ad-2bd-0.2=0

f4=c^2+d^2-1=0

with initial condition (0.7, 0.2, 0.6, 0.3)^t. I solved this using Newton's method and here the iteration

 n        a                       b                       c                   d              error

-----------------------------------------------------------------------------

 0    0.70000000     0.20000000      0.60000000     0.30000000

 1    1.10362642     0.03954838      1.13491956     0.14682754     0.53491956 

 2    0.98731221     -0.03486513     1.01757054    -0.00041099     0.14723853 

 3    0.97161166     -0.04147173     1.00014326    -0.02109827     0.02068727 

 4    0.97133096     -0.04161789     0.99976714    -0.02158814     0.00048987 

-----------------------------------------------------------------------------

I need to plot all the equations in one graph.

thanks to everyone who help me with this :)