Increase resolution in bivariate contour plot

backend/src/optimization_manager.py

@@ -130,8 +130,8 @@ class OptimizationManager:
             }
 
         elif mode == "bivariate":
-            x = np.linspace(xlim[0], xlim[1], 50)
-            y = np.linspace(ylim[0], ylim[1], 50)
+            x = np.linspace(xlim[0], xlim[1], 100)
+            y = np.linspace(ylim[0], ylim[1], 100)
             X, Y = np.meshgrid(x, y)
             f = lambdify(('x', 'y'), expr, modules=['numpy'])
             Z = f(X, Y)