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Recent content by lovelymimi
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Mathematics: Post your doubts here!
- lovelymimi
- Post #4,221
- Forum: A-Levels
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Mathematics: Post your doubts here!
T3=20 ar2=20 a=20/r2 sum to infinity=3a a/(1-r)=3a a=3a(1-r) 20/r2=3(20/r2)(1-r) 20/r2=60/r2(1-r) 60-60r=20 -60r=20-60 -60r=-40 r=2/3 a=20/(2/3)2 =45 T8=3T3 a+7d=3(a+2d) 45+7d=3(45)+6d 7d-6d=135-45 d=90 s8=4s4 s8=8/2[2(45)+7(90)] =2880 s4=4/2[2(45)+3(90)] =720...- lovelymimi
- Post #4,212
- Forum: A-Levels
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Mathematics: Post your doubts here!
solve my doubt Q3(ii),Q4(ii),Q7(i),(ii),Q10(iii)- lovelymimi
- Post #4,203
- Forum: A-Levels
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Mathematics: Post your doubts here!
can you help me 2 solve Q3(ii),Q9(ii)(b).....plzzzzz help meee- lovelymimi
- Post #4,202
- Forum: A-Levels
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Mathematics: Post your doubts here!
can u help me solve Q7(iii),Q9(ii),Q10(iii)- lovelymimi
- Post #4,201
- Forum: A-Levels