Tajribi Math Sx (65)

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‫ﻧﻴﺎﺑﺔﻓﺎس‬ ‫اﻟﺠﺪﻳﺪ دار دﺑﻴﺒﻎ‬ ‫ﺛﺎﻧﻮﻳﺔ ﺳﻴﺪي‬ ‫إﺑﺮاﻫﻴﻢ‬

‫اﻟﺘﻤﺮﻳﻦ اﻷول‪:‬‬

‫اﻟﻤﻌﺎﻣﻞ ‪7:‬‬

‫اﻣـﺘــﺤـﺎن ﺗـﺠـﺮﻳـﺒـﻲ‬ ‫اﻟﻤــــﺎدة ‪ :‬اﻟﺮﻳﺎﺿﻴﺎت‬ ‫اﻟﻤﺴﺘﻮى ‪ :‬اﻟﺜﺎﻧﻴﺔ ﺑﻜﺎﻟﻮرﻳﺎ‬ ‫اﻟﺸـﻌـﺒــﺔ ‪ :‬اﻟﻌﻠﻮم اﻟﺘﺠﺮﻳﺒﻴﺔ‬

‫‪1/2‬‬

‫ﻣﺪة اﻹﻧﺠﺎز ‪3 :‬س‬ ‫ﺗﺠﺮﻳﺒﻲ رﻗﻢ ‪1‬‬ ‫اﻟﺴﻨﺔ اﻟﺪراﺳﻴﺔ‪04/2005:‬‬

‫)‪ 2,5‬ﻥ(‬

‫ﻨﻌﺘﺒﺭ ﺍﻟﻤﺘﺘﺎﻟﻴﺔ ‪ (u n )n∈IN‬ﺍﻟﻤﻌﺭﻓﺔ ﺒﻤﺎ ﻴﻠﻲ‪:‬‬ ‫‪3‬‬ ‫‪‬‬ ‫= ‪u 0‬‬ ‫‪2‬‬ ‫‪‬‬ ‫‪u = (u − 1)2 + 1 , ∀ n ∈ IN‬‬ ‫‪n‬‬ ‫‪ n +1‬‬ ‫‪ 1‬ـ ﺒﻴﻥ ﺃﻨﻪ ﻟﻜل ‪ n‬ﻤﻥ ‪IN‬‬

‫‪ 2‬ـ ﺃ ـ ﺍﺩﺭﺱ ﺭﺘﺎﺒﺔ ‪(u n )n∈IN‬‬ ‫ﺏ ـ ﺍﺴﺘﻨﺘﺞ ﺃﻥ ‪ (u n )n∈IN‬ﻤﺘﻘﺎﺭﺒﺔ‬ ‫‪ 3‬ـ ﺍﺤﺴﺏ ﻨﻬﺎﻴﺔ ‪(u n )n∈IN n‬‬ ‫اﻟﺘﻤﺮﻳﻦ اﻟﺜﺎﻧﻲ‪:‬‬

‫‪3‬‬ ‫‪2‬‬

‫) ‪0,75‬ﻥ(‬

‫≤ ‪1 ≤ un‬‬

‫) ‪0,5‬ﻥ(‬ ‫)‪0,25‬ﻥ (‬ ‫)‪1‬ﻥ(‬

‫)‪ 3,5‬ﻥ(‬

‫‪ ( A‬ﻨﻌﺘﺒﺭ ﻓﻲ ‪ C‬ﺍﻟﻤﻌﺎﺩﻟﺔ‪:‬‬ ‫‪(E) : (z + 1 - i) (z² + (1 - i 3) z - i 3) = 0‬‬

‫‪ 1‬ـ ﺤل ﻓﻲ ‪ C‬ﺍﻟﻤﻌﺎﺩﻟﺔ )‪(E‬‬

‫‪ 2‬ـ ﻨﻌﺘﺒﺭ ﻓﻲ ﺍﻟﻤﺴﺘﻭﻯ ﺍﻟﻌﻘﺩﻱ )‪ (P‬ﺍﻟﻤﻨﺴﻭﺏ ﻟﻤﻌﻠﻡ ﻤﺘﻌﺎﻤﺩ ﻤﻤﻨﻅﻡ ﻤﺒﺎﺸﺭ )‬

‫(‬

‫) ‪0,75‬ﻥ(‬

‫‪ o, e1, e 2‬اﻟﻨﻘﻂ ‪ A‬و ‪ B‬و ‪ C‬أﻟﺤﺎﻗﻬﺎ ﻋﻠﻰ‬

‫اﻟﺘﻮاﻟﻲ ﻫﻲ ‪ z A = −1 :‬و ‪ z B = i 3‬و ‪zC = −1 + i‬‬

‫ﺃـ‬

‫) ‪(0,75‬‬

‫أﻛﺘﺐ ‪ z A‬و ‪ z B‬و ‪ z C‬ﻋﻠﻰ اﻟﺸﻜﻞ اﻟﻤﺜﻠﺜﻲ‪.‬‬

‫ﺏ ـ ﺍﺤﺴﺏ‬

‫‪12‬‬

‫‪12‬‬

‫) ‪0,5‬ﻥ(‬

‫‪12‬‬

‫‪z A + z B + zC‬‬ ‫∧‬

‫‪ 3‬ـ ﺤﺩﺩ ﻗﻴﺎﺴﺎ ﻟﻠﺯﺍﻭﻴﺔ )‪(AB , AC‬‬ ‫‪(1 + i ) z - i‬‬ ‫‪ ( B‬ﻨﻀﻊ‬ ‫= )‪ ، f (z‬ﻟﻜل ‪ z‬ﻤﻥ ‪C − {− 1} :‬‬ ‫‪z +1‬‬

‫) ‪0,5‬ﻥ(‬

‫ﺤﺩﺩ )‪ (L‬ﻤﺠﻤﻭﻋﺔ ﺍﻟﻨﻘﻁ ‪ M‬ﺫﺍﺕ ﺍﻟﻠﺤﻕ ‪ z‬ﺒﺤﻴﺙ ﻴﻜﻭﻥ )‪ f (z‬ﻋﺩﺩﺍ ﺤﻘﻴﻘﻴﺎ‪.‬‬ ‫اﻟﺘﻤﺮﻳﻦ اﻟﺜﺎﻟﺚ‪:‬‬

‫)‪ 3‬ﻥ (‬

‫)‬

‫) ‪1‬ن(‬

‫(‬

‫ﻨﻌﺘﺒﺭ ﻓﻲ ﺍﻟﻔﻀﺎﺀ ﺍﻟﻤﻨﺴﻭﺏ ﺍﻟﻰ ﻤﻌﻠﻡ ﻤﺘﻌﺎﻤﺩ ﻤﻤﻨﻅﻡ ﻭﻤﺒﺎﺸﺭ ‪ . o, i , j , k‬ﺍﻟﻨﻘﻁﺔ )‪ A (0, 1, 1‬ﻭﺍﻟﻔﻠﻜﺔ )‪ (S‬ﻤﻌﺎﺩﻟﺔ‬ ‫ﺩﻴﻜﺎﺭﺘﻴﺔ ﻟﻬﺎ ‪x² + y² + z² - 2x + 2z - 2 = 0 :‬‬

‫) ‪0,5‬ﻥ(‬

‫‪ 1‬ـ ﺤﺩﺩ ﺍﻟﻤﺭﻜﺯ ‪ Ω‬ﻟﻠﻔﻠﻜﺔ )‪ (s‬ﻭﺸﻌﺎﻋﻬﺎ ‪R‬‬

‫‪ 2‬ـ ﺤﺩﺩ ﺘﻤﺜﻴﻼ ﺒﺎﺭﺍﻤﺘﺭﻴﺎ ﻟﻠﻤﺴﺘﻘﻴﻡ )‪ (D‬ﺍﻟﻤﺎﺭ ﻤﻥ ‪ A‬ﻭ )‪ u (-1, 1, 0‬ﻤﻭﺠﻬﺔ ﻟﻪ‬

‫) ‪0,5‬ﻥ(‬

‫‪ 3‬ـ ﺃ ـ ﺍﺤﺴﺏ ﺍﻟﻤﺴﺎﻓﺔ ﺒﻴﻥ ‪ Ω‬ﻭﺍﻟﻤﺴﺘﻘﻴﻡ )‪(D‬‬

‫) ‪0,5‬ﻥ(‬

‫ﺏ ـ ﺍﺴﺘﻨﺘﺞ ﺃﻥ )‪ (D‬ﻤﻤﺎﺱ ﻟـ )‪(s‬‬

‫) ‪0,25‬ﻥ(‬

‫ﺝ ـ ﺤﺩﺩ ﺇﺤﺩﺍﺜﻴﺎﺕ ﻨﻘﻁﺔ ﺍﻟﺘﻤﺎﺱ‬

‫‪ 4‬ـ ﺤﺩﺩ ﺘﻘﺎﻁﻊ ﺍﻟﻔﻠﻜﺔ )‪ ( S‬ﻭﺍﻟﻤﺴﺘﻭﻯ )‪ ( P‬ﺒﺤﻴﺙ‬

‫) ‪0,5‬ﻥ(‬

‫‪(p) : x+y-z = 0‬‬

‫‪Messouar Mohammed prof. de math au ly. sidibrahim Fès‬‬

‫‪1‬‬

‫) ‪0,75‬ﻥ(‬ ‫‪http://arabmats.ift.fr‬‬

‫ﻧﻴﺎﺑﺔﻓﺎس‬ ‫اﻟﺠﺪﻳﺪ دار دﺑﻴﺒﻎ‬ ‫ﺛﺎﻧﻮﻳﺔ ﺳﻴﺪي‬ ‫إﺑﺮاﻫﻴﻢ‬

‫اﻣـﺘــﺤـﺎن ﺗـﺠـﺮﻳـﺒـﻲ‬ ‫اﻟﻤــــﺎدة ‪ :‬اﻟﺮﻳﺎﺿﻴﺎت‬ ‫اﻟﺸـﻌـﺒــﺔ ‪ :‬اﻟﻌﻠﻮم اﻟﺘﺠﺮﻳﺒﻴﺔ‪:‬‬

‫اﻟﺜﺎﻧﻴﺔ ﺑﻜﺎﻟﻮرﻳﺎ‬

‫اﻟﻤﻌﺎﻣﻞ ‪7:‬‬

‫‪2/2‬‬

‫ﻣﺪة اﻹﻧﺠﺎز ‪3 :‬س‬ ‫اﻟﺴﻨﺔ اﻟﺪراﺳﻴﺔ‪04/2005:‬‬

‫)‪ 3‬ﻥ(‬

‫اﻟﺘﻤﺮﻳﻦ اﻟﺮاﺑﻊ‪:‬‬

‫ﻴﺤﺘﻭﻱ ﻜﻴﺱ ﻋﻠﻰ ‪ 8‬ﻜﺭﺍﺕ ﻻ ﻴﻤﻜﻥ ﺍﻟﺘﻤﻴﻴﺯ ﺒﻴﻨﻬﻤﺎ ﺒﺎﻟﻠﻤﺱ‪:‬‬

‫‪ 5‬ﻜﺭﺍﺕ ﺤﻤﺭﺍﺀ ﻤﺭﻗﻤﺔ‪2 ، 2 ، 2 ، 2، 1 :‬‬ ‫ﻭ ‪ 3‬ﻜﺭﺍﺕ ﺒﻴﻀﺎﺀ ﻤﺭﻗﻤﺔ‪2 ،1 ،1 :‬‬ ‫ﻨﺴﺤﺏ ﻋﺸﻭﺍﺌﻴﺎ ﺒﺘﺘﺎﺒﻊ ﻭﺒﺩﻭﻥ ﺇﺤﻼل ‪ 3‬ﻜﺭﺍﺕ ﻤﻥ ﺍﻟﻜﻴﺱ‬

‫‪ 1‬ـ ﺍﺤﺴﺏ ﺍﺤﺘﻤﺎل ﺍﻷﺤﺩﺍﺙ ﺍﻟﺘﺎﻟﻴﺔ‪:‬‬

‫ﺍﻟﺤﺩﺙ ‪" A‬ﺍﻟﻜﺭﺍﺕ ﺍﻟﻤﺴﺤﻭﺒﺔ ﺘﺤﻤل ﻨﻔﺱ ﺍﻟﺭﻗﻡ"‬

‫) ‪0,75‬ﻥ(‬

‫ﺍﻟﺤﺩﺙ ‪" B‬ﺴﺤﺏ ﻜﺭﺘﺎﻥ ﺤﻤﺭﻭﺍﺘﺎﻥ ﻭﻜﺭﺓ ﺒﻴﻀﺎﺀ"‪.‬‬

‫) ‪1‬ﻥ(‬

‫‪ 2‬ـ ﺍﺤﺴﺏ ﺍﺤﺘﻤﺎل ﺍﻟﺤﺩﺙ ‪ B‬ﻋﻠﻤﺎ ﺃﻥ ﺍﻟﺤﺩﺙ ‪ A‬ﻤﺤﻘﻕ‬

‫) ‪1‬ﻥ(‬

‫‪ 3‬ـ ﻫل ﺍﻟﺤﺩﺜﺎﻥ ‪ A‬ﻭ ‪ B‬ﻤﺴﺘﻘﻼﻥ؟ ﻋﻠل ﺠﻭﺍﺒﻙ‪.‬‬

‫) ‪0,25‬ﻥ(‬

‫)‪ 8‬ﻥ (‬

‫اﻟﺘﻤﺮﻳﻦ اﻟﺨﺎﻡﺲ‪:‬‬

‫ﻨﻌﺘﺒﺭ ﺍﻟﺩﺍﻟﺔ ‪ f‬ﺍﻟﻤﻌﺭﻓﺔ ﻋﻠﻰ ‪ IR‬ﺒﻤﺎ ﻴﻠﻲ‪:‬‬ ‫‪f (x) = x - xex ; x ≤ 0‬‬

‫‪f:‬‬ ‫‪+1) ; x > 0‬‬

‫‪2‬‬

‫‪x‬‬

‫‪f (x) = ln( 3‬‬ ‫) ‪0,5‬ﻥ(‬

‫‪ 1‬ـ ﺒﻴﻥ ﺃﻥ ‪ f‬ﻤﺘﺼﻠﺔ ﻓﻲ ﺼﻔﺭ‬ ‫‪ 2‬ـ ﺍﺩﺭﺱ ﻗﺎﺒﻠﺔ ﺍﺸﺘﻘﺎﻕ‪ f‬ﻋﻠﻰﻴﻤﻴﻥ ﻭ ﻴﺴﺎﺭﺼﻔﺭ ﺜﻡ ﺍ ﻋﻁ ﺘﺎﻭﻴﻼ ﻫﻨﺩﺴﻴﺎ ﻟﺩ ﻟﻙ‬

‫) ‪0,75‬ﻥ(‬ ‫) ‪0,5‬ﻥ(‬

‫‪lim‬‬ ‫‪ 3‬ـ ﺍﺤﺴﺏ )‪ lim f (x‬ﻭ )‪f (x‬‬ ‫∞‪x→ −‬‬ ‫∞‪x→+‬‬ ‫‪ 4‬ـ ﺤﺩﺩ ﺍﻟﻔﺭﻭﻉ ﺍﻟﻼﻨﻬﺎﺌﻴﺔ ﻟـ ) ‪ (C f‬ﻤﻨﺤﻨﻰ ‪f‬‬

‫)‬

‫‪ 5‬ـ ﺃ ـ ﺍﺤﺴﺏ )‪ f ' (x‬ﻋﻠﻰ ﻜل ﻤﻥ ﺍﻟﻤﺠﺎﻟﻴﻥ [‪ ]-∞, 0‬ﻭ [∞‪] 0, +‬‬

‫) ‪1‬ﻥ(‬

‫ﺏ ـ ﻀﻊ ﺠﺩﻭل ﺘﻐﻴﺭﺍﺕ ‪f‬‬

‫‪ 6‬ـ ﺍﺩﺭﺱ ﺘﻘﻌﺭ ) ‪ (C f‬ﻭﺒﻴﻥ ﺍﻨﻪ ﻴﻘﺒل ﻨﻘﻁﺔ ﺍﻨﻌﻁﺎﻑ ﺍﻓﺼﻭﻟﻬﺎ ﺴﺎﻟﺏ‬

‫‪ 7‬ـ ﺃﻨﺸﺊ ) ‪ (C f‬ﻤﻨﺤﻨﻰ ‪ f‬ﻓﻲ ﻤﻌﻠﻡ ﻤﺘﻌﺎﻤﺩ ﻤﻤﻨﻅﻡ ) ‪(o, i , j‬‬ ‫ﻨﺎﺨﺩ ‪ e-2 ≈ 0.14) :‬ﻭ‬

‫‪= 1cm‬‬

‫‪i‬‬

‫(‬

‫) ‪0,5‬ﻥ(‬

‫) ‪0,75‬ﻥ(‬

‫) ‪1,5‬ﻥ(‬

‫‪ 8‬ـ ﻟﺘﻜﻥ ‪ g‬ﻗﺼﻭﺭ ‪ f‬ﻋﻠﻰ [∞ ‪I = ]0, +‬‬

‫ﺃ ـ ﺒﻴﻥ ﺃﻥ ‪ g‬ﺘﻘﺎﺒل ﻤﻥ ﺍﻟﻤﺠﺎل ‪ I‬ﻨﺤﻭ ﻤﺠﺎل ‪ J‬ﻴﺠﺏ ﺘﺤﺩﻴﺩﻩ‪.‬‬

‫ﺏ ـ ﺃﻨﺸﺊ ﻓﻲ ﻨﻔﺱ ﺍﻟﻤﻌﻠﻡ ) ‪(C g‬‬

‫) ‪ 0,5‬ﻥ(‬ ‫) ‪0,5‬ﻥ(‬

‫‪−1‬‬

‫ﺝ ـ ﺍﺤﺴﺏ )‪ g-1 (x‬ﺒﺩﻻﻟﺔ ‪ x‬ﻟﻜل ‪x ∈ J‬‬ ‫‪Messouar Mohammed prof. de math au ly. sidibrahim Fès‬‬

‫‪1‬ﻥ(‬

‫) ‪0,5‬ﻥ(‬ ‫‪2‬‬

‫‪http://arabmats.ift.fr‬‬

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