u_app 696 old_code/tumor_growth/tumor_growth.h Range u_app; // u_app == u_approx(x); u_app 697 old_code/tumor_growth/tumor_growth.h u_approx_local.evaluate(bigger_quadrature[pt], u_app); // initialize u_app 705 old_code/tumor_growth/tumor_growth.h u_app, u_or_w_app, u_x, uwu_x_chi);