x = 230; y = transformer(x); y_correct = 115; if ~isequal(y,y_correct) disp('That is not correct!'); disp('ÆÆÆÆÆÆÆÆÆÆÆÆÈØ8áÿèqBDüaZF$TWËF®H0ÑÓKÛÆÆÆÈÆÆÆÆÆÆÆÆÆÆÆÆÆÆÆÆ'); disp('ÆÆÆÆÆÆÆÉÔ$ÜWçXwí/+«}{}º°{×}pÔ¿*/&v&F§ÉgÁÂÔÔÔÆÆÆÆÆÆÆÆÆÆÆÆ'); disp('ÆÆÆÆÆÆÔÔpæ¼í¢rîC/ìn[**ª°"²_!*\"_^¬ï7&¼n/V2¼ÿ§ÖHÔÆÆÆÆÆÆÆÆÆ'); disp('ÆÆÆÆWÐ0õCtîv½»¬°"¡^¬°³;:²-::÷";^¬¬³°÷¬(}(}{I¾$ÖE¶MÈÆÆÆÆÆÆ'); disp('ÆÆÆÛP9{{{ï{}ª°³º°²ª²,:::¨¨¨¸'';::¹¹;²ª*{}|¬}íí<t=åÚBÔÕÆÆÆÆ'); disp('ÆÆÆÐÿj&£j{/»°°³"_;;¹;:¸.¸¨¸¸¸¨,¨,''^^°¬¡"ª¦¦{¿{î46bôBÆÈÑÕÆ'); disp('ÆÆÆÕKC¿}¦º~²²!^;:¨¸¨¸¨¸··´·.¸¨¸¸¸:;::~~¯°÷÷{(*<}íIàãK¶ÑÑÆ'); disp('ÆÆÔMýwri¦¯;'':''::¨´.¨ ·· ···`¨¨:;,,¨¨,;²"°°°"_°÷{r±¼FÛÆÆ'); disp('ÆƧTî{¬¬º":;,¸´¸``.·· · ·····´.´···..`¸¨:;__^¯"÷{i{zagWÈ'); disp('ÆÆÖ¼l|²²"¬²;¸.··· · · ······´.¨:_²¨`¸¨:;_ª°¬°¦»}[uaßN'); disp('ÈÔ©n/÷º""_,¸´···· ·········.´¸¨:::-¹;,::;^°*|{+}}}>J5F'); disp('ÆpIc}*«÷²_:¨¸¸`· ´¸.········.``¸¸¨,;­;;;:;­²"ª÷¦}»}vI6ë'); disp('Èdc+¦/}÷"-:''¨`·· ¨,`.·········´¸¸¸¸,:;_^-::'''';_¡*¦«)t=Yå'); disp('ÔAu}÷÷¡ª²¹''¸`¸· ·¨''`.·.·······´``¸¨¨,;­°~:¨¨:;¹;ª¦{|ízÏß'); disp('Ðs{÷¬º¬_¹;¨¨¸´···¨,''¸`··········`¸¨¨::;-¡º::'':­¹¹^¯^°ºí%p'); disp('Ëõî}¬¬ª¬;:,´····´,:,,`´´´.····.·´¸¨¨'':­_"¦­,:::_°¬*°¡"¬{Y'); disp('§øL?}}*ª¡²''¸``·´¸::::¨¨_*I}_¨...`¸,^[ôî\¬{¬;;_^²º¦¬ï{]l}}'); disp('ß5]«¬°¦{¦^:_ª^_,¸::''²;::_~^~;;¨`¨;¯){ti¬ìïº;^+t¿}*°}i\tcî'); disp('ÆS%î}}¦ïI¦^²"¬°;¸::''­::°nÊʪ^~^¨;(°¬ÊÊLz}*÷;¬ï±sVÌx{»/{?]'); disp('ÉKg4{¬¦î¼}¯;:_;£ç¦²:''¸,²:²:,:¡~:;}-:;¡°÷°²?{Âݾ5ï5ntÍruz6'); disp('®k+÷°º¿ii;,;¨¬¸^áIi°¸´`¸¸´·´¨­²­''º*¹:;__²°C+¾án%Iå%j{tI½ç'); disp('Îv³°+{uu±°;;:*>"lz{t_¸······¨;¬_¨;{";::;-¦=">ïîpîZhtï£awD'); disp('j)¬×{rxÍ©i¡^*_?¬²Y}c¬:`.····''^{:¸¨¡÷::-²²}{»{}{Y±aYao¢ô®W'); disp('&l{{?Jnîz¿¬°ª¯lf¬C?ï°::¨´··¸:¬¿¬:;{}:::²°)JYjrYzADhZdÐ#ÆÆ'); disp('LÌl11îIì[ï°~~°~{ÞÊ©±*,::`.¸'':²²i±¼¦ª~^;²º[ÈÔÆmzôG§ÓÓ¶ÛÔÈÆ'); disp('WDîî{ïuîv]°"^«¦÷¿àÕ§/¹::¸¨ªCPEGõ½ð®YCv¬"}ÔÊÊÊÊËÓèÖÕÔÔÉÆÆÆ'); disp('ÈÔë±zI[{{÷"ª°º*{zøÔʧ¹;­'':&I]tnu}ξn¦{"÷1ÊÊÊÊÊÊÔ®ÖÆÆÆÆÆÆÆ'); disp('ÆÆÔK&I\*{*«*¦{{¿±ÆÊÊÊÕ÷°ª;;­:;­²^_­;-°}DÊÊÊÊÊÊÊÊÊÊÆÆÆÆÆÆÆ'); disp('ÆÆÆ#¶©x/il\tîofbÊÊÊÊÊÊÊMz?²²;:¨¸¸¸'';ª¾ÊIÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÆË'); disp('ÆÆÆÆÆÆÖÐMÖdøFsÉÊÊÊÊÊÊʪÎÆÊÊÖJ°-;-_²uÊV;MÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊ'); disp('ÆÆÆÆÆÆÆÆÆÆÈÈÊÊÊÊÊÊÊÊÊÊÊz··!3ÊÊÊÆMËÊë² vÊÔÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊ'); disp('ÆÆÆÆÆÆÆÆÆÆÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÖ¿ ·;¬÷²¸ ¦ÊÅÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊ'); disp('ÆÆÆÆÆÆÆÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊ· ·*42/&bî^:¿ÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊ'); disp('ÆÆÆÆÆÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊ:´-ÊÊÊÊÊÊÖÔ^ ½ÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊ'); disp('ÆÆËÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊ· :ëÊÊÊÊÊʬ PÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊ'); disp('ÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊ ²ÞÊÊÊÊÝ WÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊ'); disp('ÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÉ {ÊÊÊʲ ÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊ'); disp('ÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÅ ¹ÊÊÊÊÊ:ÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊ'); disp('ÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊg µÊÊÊÊËÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊ'); disp('ÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊ8·gÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊ'); disp('Is this problem a hair-raiser?'); end assert(isequal(y,y_correct))

% On request of Ned Gulley, some extra testcases (for the, hopefully, stable voltage regulator within the input voltage range specified on the box). assert(isequal(transformer(173),115)) assert(isequal(transformer(225),115)) assert(isequal(transformer(145),115)) assert(isequal(transformer(238),115)) assert(isequal(transformer(163),115)) assert(isequal(transformer(128),115)) assert(isequal(transformer(216),115)) assert(isequal(transformer(164),115)) assert(isequal(transformer(136),115)) assert(isequal(transformer(156),115)) assert(isequal(transformer(166),115)) assert(isequal(transformer(132),115)) assert(isequal(transformer(162),115)) assert(isequal(transformer(227),115)) assert(isequal(transformer(203),115)) assert(isequal(transformer(168),115)) assert(isequal(transformer(174),115)) assert(isequal(transformer(170),115)) assert(isequal(transformer(161),115)) assert(isequal(transformer(226),115)) assert(isequal(transformer(232),115)) assert(isequal(transformer(146),115)) assert(isequal(transformer(151),115)) assert(isequal(transformer(152),115)) assert(isequal(transformer(193),115)) assert(isequal(transformer(201),115)) assert(isequal(transformer(192),115)) assert(isequal(transformer(133),115)) assert(isequal(transformer(137),115)) assert(isequal(transformer(224),115)) assert(isequal(transformer(200),115)) assert(isequal(transformer(221),115)) assert(isequal(transformer(160),115)) assert(isequal(transformer(230),115)) assert(isequal(transformer(176),115)) assert(isequal(transformer(210),115)) assert(isequal(transformer(159),115)) assert(isequal(transformer(177),115)) assert(isequal(transformer(126),115)) assert(isequal(transformer(197),115)) assert(isequal(transformer(141),115)) assert(isequal(transformer(222),115)) assert(isequal(transformer(189),115)) assert(isequal(transformer(223),115)) assert(isequal(transformer(140),115)) assert(isequal(transformer(231),115)) assert(isequal(transformer(236),115)) assert(isequal(transformer(180),115)) assert(isequal(transformer(191),115)) assert(isequal(transformer(149),115)) assert(isequal(transformer(172),115)) assert(isequal(transformer(196),115)) assert(isequal(transformer(135),115)) assert(isequal(transformer(209),115)) assert(isequal(transformer(144),115)) assert(isequal(transformer(233),115)) assert(isequal(transformer(215),115)) assert(isequal(transformer(204),115)) assert(isequal(transformer(187),115)) assert(isequal(transformer(202),115)) assert(isequal(transformer(217),115)) assert(isequal(transformer(171),115)) assert(isequal(transformer(153),115)) assert(isequal(transformer(139),115)) assert(isequal(transformer(148),115)) assert(isequal(transformer(169),115)) assert(isequal(transformer(130),115)) assert(isequal(transformer(219),115)) assert(isequal(transformer(206),115)) assert(isequal(transformer(127),115)) assert(isequal(transformer(129),115)) assert(isequal(transformer(218),115)) assert(isequal(transformer(220),115)) assert(isequal(transformer(213),115)) assert(isequal(transformer(207),115)) assert(isequal(transformer(188),115)) assert(isequal(transformer(179),115)) assert(isequal(transformer(185),115)) assert(isequal(transformer(131),115)) assert(isequal(transformer(157),115)) assert(isequal(transformer(143),115)) assert(isequal(transformer(147),115)) assert(isequal(transformer(138),115)) assert(isequal(transformer(214),115)) assert(isequal(transformer(178),115)) assert(isequal(transformer(182),115)) assert(isequal(transformer(195),115)) assert(isequal(transformer(237),115)) assert(isequal(transformer(155),115)) assert(isequal(transformer(158),115)) assert(isequal(transformer(199),115)) assert(isequal(transformer(211),115)) assert(isequal(transformer(228),115)) assert(isequal(transformer(175),115)) assert(isequal(transformer(150),115)) assert(isequal(transformer(194),115)) assert(isequal(transformer(134),115)) assert(isequal(transformer(229),115)) assert(isequal(transformer(181),115)) assert(isequal(transformer(190),115)) assert(isequal(transformer(165),115)) assert(isequal(transformer(235),115)) assert(isequal(transformer(239),115)) assert(isequal(transformer(212),115)) assert(isequal(transformer(208),115)) assert(isequal(transformer(142),115)) assert(isequal(transformer(198),115)) assert(isequal(transformer(184),115)) assert(isequal(transformer(240),115)) assert(isequal(transformer(205),115)) assert(isequal(transformer(234),115)) assert(isequal(transformer(186),115)) assert(isequal(transformer(183),115)) assert(isequal(transformer(167),115)) assert(isequal(transformer(154),115))