# No result with no error from NDSolve **URL:** \ **Category:** Questions\ **Tags:** calculus, equation-solving, numerical-computation\ **Created:** [March 17, 2023, 7:42am UTC](https://community.wolfram.com/t/no-result-with-no-error-from-ndsolve/21767 "2023-03-17T07:42:36Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![kumarpardeepmath](https://avatars.discourse-cdn.com/v4/letter/k/dbc845/32.png) [@kumarpardeepmath](https://community.wolfram.com/u/kumarpardeepmath)\ **Post date:** [March 17, 2023, 7:42am UTC](https://community.wolfram.com/t/no-result-with-no-error-from-ndsolve/21767/1 "2023-03-17T07:42:36Z")
When I execute this it gives no result with no error. ``` NDSolve[{x1'[t] == z1[t] + (y1[t] - 0.1) x1[t] , y1'[t] == 1 - 0.3 y1[t] - (x1[t] x1[t]), z1'[t] == -x1[t] - 1.5 z1[t], x2'[t] == (a2[t] - 36) x2[t] + z1[t] + (y1[t] x1[t]) - a1[t] x1[t] - 2 (x2[t] - x1[t]), y2'[t] == (14 - b2[t]) y2[t] + 1 + (0.3 - b1[t]) y1[t] - (x1[t] x1[t]) - 2 (y2[t] - y1[t]), z2'[t] == (36 - a2[t]) x2[t] y2[t] + (c2[t] - 5) z2[ t] + (c1[t] - 1.5) z1[t] - 2 (z2[t] - z1[t]), a1'[t] == x1[t] (x2[t] - x1[t]) + 2 (a1[t] - 0.1), b1'[t] == y1[t] (y2[t] - y1[t]) + 2 (b1[t] - 0.3), c1'[t] == -z1[t] (z2[t] - z1[t]) - 2 (c1[t] - 1.5), a2'[t] == x2[t] y2[t] (z2[t] - z1[t]) - x2[t] (x2[t] - x1[t]) - 2 (a2[t] - 36), b2'[t] == y2[t] (y2[t] - y1[t]) - 2 (b2[t] - 14), c2'[t] == -z2[t] (z2[t] - z1[t]) - 2 (c2[t] - 5), x1[0] == 1, y1[0] == 1, z1[0] == 1, x2[0] == 50, y2[0] == 10, z2[0] == 10, a1[0] == 1, b1[0] == 1, c1[0] == 1, a2[0] == 30, b2[0] == 10, c2[0] == 2}, {x1, y1, z1, x2, y2, z2, a1, b1, c1, a2, b2, c2}, {t, 0, 20}] ``` [pk.nb](https://community.wolfram.com/uploads/short-url/o24rkMqE05E43ttIRhxxRVNKXtx.nb) (1.24 KB) ---
**Author:** ![gianlucagorni](https://avatars.discourse-cdn.com/v4/letter/g/ec9cab/32.png) [@gianlucagorni](https://community.wolfram.com/u/gianlucagorni)\ **Post date:** [March 17, 2023, 9:46am UTC](https://community.wolfram.com/t/no-result-with-no-error-from-ndsolve/21767/2 "2023-03-17T09:46:47Z")
It gives a solution in the interval `{t, 0, 6.05}`. If you plot the solution you may notice that it is likely to explode soon. That slows down computation. ---
**Author:** ![mariuszi28cg](https://yyz1.discourse-cdn.com/wolfram/user_avatar/community.wolfram.com/mariuszi28cg/32/308_2.png) [@mariuszi28cg](https://community.wolfram.com/u/mariuszi28cg)\ **Post date:** [March 17, 2023, 10:31am UTC](https://community.wolfram.com/t/no-result-with-no-error-from-ndsolve/21767/3 "2023-03-17T10:31:28Z")
See attached file 🙂 Regards M.I. [pk ver2.nb](https://community.wolfram.com/uploads/short-url/65yVoeNbx3OERxTQYlXY7e30FkF.nb) (1.15 MB)