1)

Arifmetik progressiyada a1=6, d=4 bo‘lsa, a1-a2+a3-a4+a5-...+a41-a42+a43 ning qiymatini toping.
Urinishlar soni: 0 / 1
2)

Arifmetik progressiyada a1=1, a7=6+x va a15=15+4x bo‘lsa, a16 ni toping.
Urinishlar soni: 0 / 1
3)

Tenglamani yeching: x∈N bo‘lsa,

 fraction numerator straight x minus 1 over denominator straight x squared end fraction plus fraction numerator straight x minus 2 over denominator straight x squared end fraction plus fraction numerator straight x minus 3 over denominator straight x squared end fraction plus... plus 1 over straight x squared equals 7 over 15

Urinishlar soni: 0 / 1
4)

Uchinchi,to`qqizinchi va o`n beshinchi hadlari yig`indisi 36 bo`lsa, a2+a16 ni toping.
Urinishlar soni: 0 / 1
5)

2a, 3a+3, 4a+6 ...ketma-ketlikning dastlabki 16ta hadi yig`indisi 368 ga teng bo`lsa, 38a+3  ni toping.
Urinishlar soni: 0 / 1
6)

x3-15x2+66x+a=0 tenglamaning ildizlari arifmetik progressiya tashkil qilsa, a ni toping?
Urinishlar soni: 0 / 1
7)

Arifmetik progressiyada, straight S subscript straight n equals fraction numerator straight n left parenthesis straight n plus 1 right parenthesis over denominator 2 end fraction bo'lsa a16 ni toping?
Urinishlar soni: 0 / 1
8)

Arifmetik progressiyada a4+a19=50 bo`lsa,dastlabki  22ta hadining yig`indisini toping?
Urinishlar soni: 0 / 1
9)

Arifmetik progressiyada   S30-S28=20 bo`lsa, S58  ni toping?
Urinishlar soni: 0 / 1
10)

Hisoblang: 502-492+482-472+...+22-1=?
Urinishlar soni: 0 / 1

Fikrlar

Yana