M-1

  • November 2019
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‫ﺑﺴﻤﮫ ﺗﻌﺎﻟﯽ‬

‫ﺳﻮاﻻ ت اﻣﺘﺤﺎﻧﯽ ‪ :‬ﻣﻌﺎدﻻت دﯾﻔﺮاﻧﺴﯿﻞ‬

‫ﺳﺎﻋﺖ ﺷﺮوع‪١۴ :‬‬

‫رﺷﺘﮫ‪ :‬ﻋﻤﺮان‬

‫ﻣﺪت اﻣﺘﺤﺎن ‪١٢٠ :‬‬

‫ﻧﺎم و ﻧﺎم ﺧﺎﻧﻮادﮔﯽ ‪:‬‬ ‫ﺳﺎل ﺗﺤﺼﯿﻠﯽ‪:‬‬

‫ﻧﯿﻢ ﺳﺎل ‪ :‬دوم‬

‫‪٨۴- ٨۵‬‬

‫دﻗﯿﻘﮫ‬

‫ﺗﺎرﯾﺦ اﻣﺘﺤﺎن‪١٣٨۵/ ۴ / ٧ :‬‬

‫داﻧﺸﮕﺎه آزاد اﺳﻼﻣﯽ ﻣﺮﻧﺪ‬

‫ﺑﺎرم‬

‫‪ (١‬ﻣﻌﺎدﻟﮫ ھﺎی دﯾﻔﺮاﻧﺴﯿﻞ زﯾﺮرا ﺣﻞ ﮐﻨﯿﺪ‪ ۶).‬ﻣﻌﺎدﻟﮫ را ﺑﮫ دﻟﺨﻮاه ﺣﻞ ﮐﻨﯿﺪ(‪.‬‬ ‫‪1‬‬ ‫‪2 2‬‬

‫)‬

‫‪A) xy ′ = (1 − y‬‬

‫‪B ) ( x 3 + 3xy 2 ) dx + ( y 3 + 3x 2 y ) dy = 0‬‬ ‫‪C ) xdx + ydy = ( x 2 + y 2 ) dx‬‬

‫‪D ) ( x + 2 y − 4 ) dx − ( 2x − 4 y ) dy = 0‬‬

‫}‬

‫‪١٢‬‬

‫{‬

‫‪E )xdx − y + xy 3 (1 + ln x ) dx = 0‬‬

‫‪F ) y ′′ + 9 y = sin 2x + e 5 x‬‬ ‫‪3‬‬ ‫‪sin 2x‬‬

‫= ‪G ) y ′′ + 4 y‬‬

‫‪ (٢‬در ﻣﻌﺎدﻟﮫ دﯾﻔﺮاﻧﺴﯿﻞ زﯾﺮ ﻣﻘﺪار ‪ b‬را ﻃﻮری ﭘﯿﺪا ﮐﻨﯿﺪ ﮐﮫ ﻣﻌﺎدﻟﮫ ﮐﺎﻣﻞ ﺑﺎﺷﺪ و ﺳﭙﺲ ﺑﮫ ازای اﯾﻦ‬ ‫ﻣﻘﺪار‪ b‬ﻣﻌﺎدﻟﮫ را ﺣﻞ ﮐﻨﯿﺪ‪.‬‬

‫‪+ bx 2 y )dx + ( x + y ) x 2dy = 0‬‬

‫ﻧﺎم و ﻧﺎم ﺧﺎﻧﻮادﮔﯽ اﺳﺘﺎد‪ :‬اﺳﻤﺎﻋﯿﻞ ﻋﻠﯿﺰاده‬

‫اﻣﻀﺎء‬

‫‪2‬‬

‫‪( xy‬‬

‫ﺟﻤﻊ ﻧﻤﺮه‬

‫‪٢‬‬

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