solve[ ]

• solve a*x + b = 0
• solve a*x +b == 0 for x
• instance [ ]

solve a*x + b = 0

sol =  solve[ a*x + b == 0, {x}];

show sol;

save as solve4;

Output

"sol" → {-(b/a)}

solve a*x +b == 0 for x

sol =  solve a*x +b == 0 for x;

show sol;

save as solve4;

Output

"sol" → {-(b/a)}

instance [ ]

radius=norm[{x,y}];
linear = 3*x+2*y;

pts = instance [linear <= 3 and 0.5<=radius <=1 , 300];

//show pts;
pointplot pts;

save as cropped_anulus;

Ouput