pdenu_eq.c running xmin=-1, xmax=1.2, nx=11 ymin=-1.1, ymax=1.3, ny=10 u(xg[0],yg[0])=-2.59322 c(xg[0],yg[0])=7.46849 internal cells zeroed matrix initialized initial matrix, left side, upper -642.540 278.407 -23.184 4.836 -1.906 0.874 -0.608 0.402 -0.141 -39.414-420.674 131.126 -35.667 18.411 -10.780 8.870 -6.443 2.408 51.959 -85.252-354.928 79.891 -30.805 16.036 -12.552 8.918 -3.291 -30.762 48.848 -49.368-369.701 73.845 -25.330 17.412 -11.753 4.215 27.568 -42.231 39.705 -52.234-347.951 64.317 -32.720 20.166 -6.908 -20.825 31.038 -27.169 30.518 -40.614-368.784 86.492 -38.498 11.615 14.678 -21.571 18.238 -18.971 22.486 -30.771-401.457 109.671 -21.486 -21.878 31.984 -26.710 27.092 -30.943 41.746 -73.656-375.642 97.118 87.250-127.163 105.436-105.398 117.750-152.106 274.863-409.341-126.078 initial matrix, right side, upper -7.412 1.828 -0.748 0.434 -0.270 0.229 -0.169 0.064 674.268 -6.043 -1.982 0.649 -0.353 0.212 -0.177 0.130 -0.049 375.701 3.623 -5.319 -1.462 0.636 -0.348 0.278 -0.199 0.074 341.921 -1.770 2.183 -4.348 -1.555 0.621 -0.447 0.307 -0.111 222.852 1.271 -1.254 2.053 -4.807 -1.325 0.750 -0.477 0.166 153.533 -1.022 0.915 -1.095 1.770 -4.255 -1.878 0.937 -0.295 66.484 0.771 -0.662 0.713 -0.906 1.699 -3.869 -2.229 0.521 34.672 -0.815 0.686 -0.708 0.833 -1.226 3.222 -5.481 -1.463 6.374 1.824 -1.518 1.530 -1.731 2.303 -4.498 8.728 -9.854 -14.596 initial matrix, left side, lower -36.381 47.979 -11.831 4.842 -2.809 1.750 -1.484 1.093 -0.412 -25.088 7.656 12.833 -4.202 2.285 -1.375 1.147 -0.838 0.315 11.304 -23.449 2.965 9.466 -4.119 2.251 -1.798 1.290 -0.478 -6.905 11.459 -14.128 -3.321 10.064 -4.019 2.891 -1.986 0.719 5.290 -8.230 8.117 -13.289 -0.348 8.576 -4.855 3.088 -1.075 -4.402 6.617 -5.925 7.089 -11.457 -3.917 12.159 -6.068 1.911 3.377 -4.991 4.283 -4.613 5.868 -11.000 -6.416 14.428 -3.375 -3.596 5.274 -4.440 4.582 -5.395 7.935 -20.857 4.015 9.468 8.090 -11.810 9.828 -9.902 11.202 -14.911 29.114 -56.500 32.320 initial matrix, right side, lower -11.061 48.196 -24.378 15.043 -9.685 8.344 -6.193 2.346 -20.061 -417.974 53.703 -10.317 4.623 -2.481 1.950 -1.385 0.510 -15.811 56.223-324.075 22.778 -5.954 2.457 -1.701 1.138 -0.404 -38.961 -20.286 35.871-301.143 13.125 -1.083 -0.031 0.231 -0.125 -78.344 7.420 -9.268 27.941-297.552 12.573 -3.427 1.535 -0.425-143.735 -8.884 8.581 -12.251 28.509-297.108 13.134 -1.891 0.087-237.458 8.544 -7.604 8.862 -12.915 35.592-314.924 22.625 -1.123-340.678 0.165 0.075 -0.553 1.606 -6.129 52.179-352.190 39.992-393.967 -55.913 46.140 -45.660 50.166 -62.147 99.214 -68.463-273.506-501.430 exact solution xg[1]=-0.900000,yg[1]=-0.900000, u(x,y)=-2.32752 xg[1]=-0.900000,yg[2]=-0.800000, u(x,y)=-2.18912 xg[1]=-0.900000,yg[3]=-0.600000, u(x,y)=-1.71171 xg[1]=-0.900000,yg[4]=-0.300000, u(x,y)=-1.06697 xg[1]=-0.900000,yg[5]=0.000000, u(x,y)=-0.431036 xg[1]=-0.900000,yg[6]=0.350000, u(x,y)=-0.0485941 xg[1]=-0.900000,yg[7]=0.650000, u(x,y)=0.0405892 xg[1]=-0.900000,yg[8]=0.850000, u(x,y)=0.100357 xg[2]=-0.800000,yg[1]=-0.900000, u(x,y)=-2.16734 xg[2]=-0.800000,yg[2]=-0.800000, u(x,y)=-2.03731 xg[2]=-0.800000,yg[3]=-0.600000, u(x,y)=-1.59256 xg[2]=-0.800000,yg[4]=-0.300000, u(x,y)=-0.987475 xg[2]=-0.800000,yg[5]=0.000000, u(x,y)=-0.377129 xg[2]=-0.800000,yg[6]=0.350000, u(x,y)=0 xg[2]=-0.800000,yg[7]=0.650000, u(x,y)=0.0892679 xg[2]=-0.800000,yg[8]=0.850000, u(x,y)=0.149106 xg[3]=-0.600000,yg[1]=-0.900000, u(x,y)=-1.82134 xg[3]=-0.600000,yg[2]=-0.800000, u(x,y)=-1.71171 xg[3]=-0.600000,yg[3]=-0.600000, u(x,y)=-1.33592 xg[3]=-0.600000,yg[4]=-0.300000, u(x,y)=-0.808817 xg[3]=-0.600000,yg[5]=0.000000, u(x,y)=-0.246839 xg[3]=-0.600000,yg[6]=0.350000, u(x,y)=0.122933 xg[3]=-0.600000,yg[7]=0.650000, u(x,y)=0.213717 xg[3]=-0.600000,yg[8]=0.850000, u(x,y)=0.274841 xg[4]=-0.300000,yg[1]=-0.900000, u(x,y)=-1.30067 xg[4]=-0.300000,yg[2]=-0.800000, u(x,y)=-1.22094 xg[4]=-0.300000,yg[3]=-0.600000, u(x,y)=-0.937813 xg[4]=-0.300000,yg[4]=-0.300000, u(x,y)=-0.509072 xg[4]=-0.300000,yg[5]=0.000000, u(x,y)=0 xg[4]=-0.300000,yg[6]=0.350000, u(x,y)=0.377129 xg[4]=-0.300000,yg[7]=0.650000, u(x,y)=0.477248 xg[4]=-0.300000,yg[8]=0.850000, u(x,y)=0.546509 xg[5]=0.000000,yg[1]=-0.900000, u(x,y)=-0.841471 xg[5]=0.000000,yg[2]=-0.800000, u(x,y)=-0.783327 xg[5]=0.000000,yg[3]=-0.600000, u(x,y)=-0.564642 xg[5]=0.000000,yg[4]=-0.300000, u(x,y)=-0.198669 xg[5]=0.000000,yg[5]=0.000000, u(x,y)=0.29552 xg[5]=0.000000,yg[6]=0.350000, u(x,y)=0.717356 xg[5]=0.000000,yg[7]=0.650000, u(x,y)=0.841471 xg[5]=0.000000,yg[8]=0.850000, u(x,y)=0.932039 xg[6]=0.350000,yg[1]=-0.900000, u(x,y)=-0.426468 xg[6]=0.350000,yg[2]=-0.800000, u(x,y)=-0.381451 xg[6]=0.350000,yg[3]=-0.600000, u(x,y)=-0.200542 xg[6]=0.350000,yg[4]=-0.300000, u(x,y)=0.139335 xg[6]=0.350000,yg[5]=0.000000, u(x,y)=0.672187 xg[6]=0.350000,yg[6]=0.350000, u(x,y)=1.20771 xg[6]=0.350000,yg[7]=0.650000, u(x,y)=1.38462 xg[6]=0.350000,yg[8]=0.850000, u(x,y)=1.52163 xg[7]=0.650000,yg[1]=-0.900000, u(x,y)=-0.179008 xg[7]=0.650000,yg[2]=-0.800000, u(x,y)=-0.13783 xg[7]=0.650000,yg[3]=-0.600000, u(x,y)=0.0338387 xg[7]=0.650000,yg[4]=-0.300000, u(x,y)=0.381941 xg[7]=0.650000,yg[5]=0.000000, u(x,y)=0.988553 xg[7]=0.650000,yg[6]=0.350000, u(x,y)=1.66977 xg[7]=0.650000,yg[7]=0.650000, u(x,y)=1.90954 xg[7]=0.650000,yg[8]=0.850000, u(x,y)=2.097 xg[8]=0.850000,yg[1]=-0.900000, u(x,y)=-0.0638721 xg[8]=0.850000,yg[2]=-0.800000, u(x,y)=-0.023257 xg[8]=0.850000,yg[3]=-0.600000, u(x,y)=0.148565 xg[8]=0.850000,yg[4]=-0.300000, u(x,y)=0.510574 xg[8]=0.850000,yg[5]=0.000000, u(x,y)=1.17789 xg[8]=0.850000,yg[6]=0.350000, u(x,y)=1.96769 xg[8]=0.850000,yg[7]=0.650000, u(x,y)=2.24904 xg[8]=0.850000,yg[8]=0.850000, u(x,y)=2.46083 xg[9]=1.000000,yg[1]=-0.900000, u(x,y)=0 xg[9]=1.000000,yg[2]=-0.800000, u(x,y)=0.0405892 xg[9]=1.000000,yg[3]=-0.600000, u(x,y)=0.213717 xg[9]=1.000000,yg[4]=-0.300000, u(x,y)=0.587321 xg[9]=1.000000,yg[5]=0.000000, u(x,y)=1.30067 xg[9]=1.000000,yg[6]=0.350000, u(x,y)=2.16734 xg[9]=1.000000,yg[7]=0.650000, u(x,y)=2.47173 xg[9]=1.000000,yg[8]=0.850000, u(x,y)=2.6843 computed solution xg[1]=-0.900000,yg[1]=-0.900000, us=-2.32752 xg[1]=-0.900000,yg[2]=-0.800000, us=-2.18912 xg[1]=-0.900000,yg[3]=-0.600000, us=-1.71171 xg[1]=-0.900000,yg[4]=-0.300000, us=-1.06697 xg[1]=-0.900000,yg[5]=0.000000, us=-0.431036 xg[1]=-0.900000,yg[6]=0.350000, us=-0.0485942 xg[1]=-0.900000,yg[7]=0.650000, us=0.0405892 xg[1]=-0.900000,yg[8]=0.850000, us=0.100357 xg[2]=-0.800000,yg[1]=-0.900000, us=-2.16734 xg[2]=-0.800000,yg[2]=-0.800000, us=-2.03731 xg[2]=-0.800000,yg[3]=-0.600000, us=-1.59256 xg[2]=-0.800000,yg[4]=-0.300000, us=-0.987476 xg[2]=-0.800000,yg[5]=0.000000, us=-0.377129 xg[2]=-0.800000,yg[6]=0.350000, us=-1.93255e-07 xg[2]=-0.800000,yg[7]=0.650000, us=0.0892678 xg[2]=-0.800000,yg[8]=0.850000, us=0.149105 xg[3]=-0.600000,yg[1]=-0.900000, us=-1.82134 xg[3]=-0.600000,yg[2]=-0.800000, us=-1.71171 xg[3]=-0.600000,yg[3]=-0.600000, us=-1.33592 xg[3]=-0.600000,yg[4]=-0.300000, us=-0.808817 xg[3]=-0.600000,yg[5]=0.000000, us=-0.246839 xg[3]=-0.600000,yg[6]=0.350000, us=0.122933 xg[3]=-0.600000,yg[7]=0.650000, us=0.213717 xg[3]=-0.600000,yg[8]=0.850000, us=0.274841 xg[4]=-0.300000,yg[1]=-0.900000, us=-1.30067 xg[4]=-0.300000,yg[2]=-0.800000, us=-1.22094 xg[4]=-0.300000,yg[3]=-0.600000, us=-0.937812 xg[4]=-0.300000,yg[4]=-0.300000, us=-0.509071 xg[4]=-0.300000,yg[5]=0.000000, us=-3.50281e-07 xg[4]=-0.300000,yg[6]=0.350000, us=0.37713 xg[4]=-0.300000,yg[7]=0.650000, us=0.477248 xg[4]=-0.300000,yg[8]=0.850000, us=0.546509 xg[5]=0.000000,yg[1]=-0.900000, us=-0.841471 xg[5]=0.000000,yg[2]=-0.800000, us=-0.783327 xg[5]=0.000000,yg[3]=-0.600000, us=-0.564642 xg[5]=0.000000,yg[4]=-0.300000, us=-0.19867 xg[5]=0.000000,yg[5]=0.000000, us=0.29552 xg[5]=0.000000,yg[6]=0.350000, us=0.717356 xg[5]=0.000000,yg[7]=0.650000, us=0.841471 xg[5]=0.000000,yg[8]=0.850000, us=0.932039 xg[6]=0.350000,yg[1]=-0.900000, us=-0.426468 xg[6]=0.350000,yg[2]=-0.800000, us=-0.381451 xg[6]=0.350000,yg[3]=-0.600000, us=-0.200542 xg[6]=0.350000,yg[4]=-0.300000, us=0.139335 xg[6]=0.350000,yg[5]=0.000000, us=0.672187 xg[6]=0.350000,yg[6]=0.350000, us=1.20771 xg[6]=0.350000,yg[7]=0.650000, us=1.38462 xg[6]=0.350000,yg[8]=0.850000, us=1.52163 xg[7]=0.650000,yg[1]=-0.900000, us=-0.179008 xg[7]=0.650000,yg[2]=-0.800000, us=-0.13783 xg[7]=0.650000,yg[3]=-0.600000, us=0.0338391 xg[7]=0.650000,yg[4]=-0.300000, us=0.381941 xg[7]=0.650000,yg[5]=0.000000, us=0.988553 xg[7]=0.650000,yg[6]=0.350000, us=1.66977 xg[7]=0.650000,yg[7]=0.650000, us=1.90954 xg[7]=0.650000,yg[8]=0.850000, us=2.09699 xg[8]=0.850000,yg[1]=-0.900000, us=-0.063872 xg[8]=0.850000,yg[2]=-0.800000, us=-0.0232568 xg[8]=0.850000,yg[3]=-0.600000, us=0.148566 xg[8]=0.850000,yg[4]=-0.300000, us=0.510574 xg[8]=0.850000,yg[5]=0.000000, us=1.17789 xg[8]=0.850000,yg[6]=0.350000, us=1.96769 xg[8]=0.850000,yg[7]=0.650000, us=2.24904 xg[8]=0.850000,yg[8]=0.850000, us=2.46083 xg[9]=1.000000,yg[1]=-0.900000, us=2.44739e-07 xg[9]=1.000000,yg[2]=-0.800000, us=0.0405897 xg[9]=1.000000,yg[3]=-0.600000, us=0.213718 xg[9]=1.000000,yg[4]=-0.300000, us=0.587321 xg[9]=1.000000,yg[5]=0.000000, us=1.30067 xg[9]=1.000000,yg[6]=0.350000, us=2.16734 xg[9]=1.000000,yg[7]=0.650000, us=2.47173 xg[9]=1.000000,yg[8]=0.850000, us=2.6843 difference exact-computed solution 0.000 0.000 -0.000 0.000 -0.000 0.000 0.000 0.000 0.000 -0.000 -0.000 0.000 -0.000 0.000 0.000 0.000 -0.000 -0.000 0.000 -0.000 -0.000 0.000 -0.000 -0.000 0.000 0.000 -0.000 -0.000 0.000 -0.000 -0.000 0.000 -0.000 -0.000 -0.000 0.000 -0.000 0.000 0.000 -0.000 -0.000 0.000 0.000 -0.000 0.000 -0.000 -0.000 -0.000 0.000 0.000 -0.000 -0.000 0.000 -0.000 0.000 0.000 -0.000 -0.000 -0.000 0.000 -0.000 0.000 0.000 0.000 -0.000 -0.000 -0.000 0.000 -0.000 0.000 0.000 -0.000 total error=1.85608e-05, average error=2.57788e-07, max error=1.50928e-06