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| أرشيف المنتدى هنا نقل الموضوعات المكررة والروابط التى لا تعمل |
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أدوات الموضوع | ابحث في الموضوع | انواع عرض الموضوع |
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#2
22-05-2007, 05:14 PM
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ok
we will solution this test that now and thank you for your work good luck for all |
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#3
22-05-2007, 06:37 PM
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1) a) Graph the curve of the function then deduce the
range , monotony and its type need graph |
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#4
22-05-2007, 08:24 PM
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 In an arithmetic sequence the sum of its first and third terms = 10 and its tenth term = 21, how many terms starting from the first should be taken to make the sum = 440 ? when s1 + s3 = 10 then a + a+ 2r = 10 then 2a + 2 r = 10 then a +r = 5 and the tenth term = 21 then a + 9 r = 21 subtract the two equ then 8r = 16 then r = 2 and a = 3 thearithmetic sequence is ( 3 ,5, 7 , ....................... ) |
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#5
22-05-2007, 08:46 PM
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the sum = 440 then
n / 2 ) ( 2 a + ( n - 1 ) r = 440 when a= 3 and r = 2 then n ( n + 2 ) = 440 n ( n + 2 ) = 22 * 20 then n = 22 good lock for all |
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#6
23-05-2007, 09:30 PM
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