︠6f13d232-7b02-4555-aa64-03fe567dacfa︠ %md See http://maxima.sourceforge.net/docs/manual/de/maxima_61.html Problem 6: Powell singular function ︡de21abf7-e426-4889-851b-59b8cf5737f3︡{"done":true,"md":"\nSee http://maxima.sourceforge.net/docs/manual/de/maxima_61.html\n\nProblem 6: Powell singular function"} ︠7cfd8ef8-a784-433f-b50f-6d6eb10298bds︠ %maxima powell(x1,x2,x3,x4) := [x1+10*x2, sqrt(5)*(x3-x4), (x2-2*x3)^2, sqrt(10)*(x1-x4)^2] ︡f9eada2d-61d6-4bac-a304-5684832a76b0︡{"stdout":"powell(x1,x2,x3,x4):=[x1+10*x2,sqrt(5)*(x3-x4),(x2-2*x3)^2,sqrt(10)*(x1-x4)^2]"}︡{"done":true}︡ ︠6c6684fc-57bc-4815-a1aa-259a35e51bc4s︠ %maxima load("minpack") minpack_lsquares(powell(x1,x2,x3,x4), [x1,x2,x3,x4], [3,-1,0,1]) ︡df43a76d-2ed2-45c6-ad75-89db886377e4︡{"stderr":"Error in lines 1-1\n"}︡{"stderr":"Traceback (most recent call last):\n File \"/cocalc/lib/python2.7/site-packages/smc_sagews/sage_server.py\", line 995, in execute\n exec compile(block+'\\n', '', 'single') in namespace, locals\n File \"\", line 1, in \n File \"/cocalc/lib/python2.7/site-packages/smc_sagews/sage_server.py\", line 1034, in execute_with_code_decorators\n print code_decorator.eval(code, locals=self.namespace),\n File \"/ext/sage/sage-8.0/local/lib/python2.7/site-packages/sage/interfaces/expect.py\", line 1305, in eval\n raise TypeError('error evaluating \"%s\":\\n%s'%(code,s))\nTypeError: error evaluating \"load(\"minpack\")\nminpack_lsquares(powell(x1,x2,x3,x4), [x1,x2,x3,x4], [3,-1,0,1])\":\nError executing code in Maxima\nCODE:\n\tload(\"minpack\");\nMaxima ERROR:\n\t\r\n;;;\r\n;;; Compiling /ext/sage/sage-8.0/local/share/maxima/5.39.0/share/minpack/minpack-package.lisp.\r\n;;; OPTIMIZE levels: Safety=2, Space=0, Speed=3, Debug=0\r\n;;;\r\n;;; End of Pass 1.\r\n;;; Finished compiling /ext/sage/sage-8.0/local/share/maxima/5.39.0/share/minpack/minpack-package.lisp.\r\n;;;\r\n;;;\r\n;;; Compiling /ext/sage/sage-8.0/local/share/maxima/5.39.0/share/minpack/lisp/dpmpar.lisp.\r\n;;; OPTIMIZE levels: Safety=2, Space=0, Speed=3, Debug=0\r\n;;;\r\n;;; End of Pass 1.\r\n;;; Emitting code for MINPACK::DPMPAR.\r\n;;; Finished compiling /ext/sage/sage-8.0/local/share/maxima/5.39.0/share/minpack/lisp/dpmpar.lisp.\r\n;;;\r\nloadfile: failed to load /ext/sage/sage-8.0/local/share/maxima/5.39.0/share/minpack/load-minpack.lisp\r\n -- an error. To debug this try: debugmode(true);\r\n\n"}︡{"done":true}︡ ︠5cb2389d-96f5-4e92-8ed3-ede10f9c8a0e︠