plss anyone solve ques no 45
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we know,
Sn - S(n - 1) =Tn
given,
Sq =63q - 3q^2
Tq = Sq - S(q - 1)
= 63q - 3q^2 -63(q - 1) +3(q -1)^2
=63(q - q + 1) -3(q ^ 2 - q^2 +2q -1 )
=63 - 6q + 3= 66 -6q
Tq = 66 -6q
according to question ,
Tp = -60
Tp = 66 - 6p = -60
126 = 6p
p = 21
T11 = 66 - 6(11) = 66 - 66 = 0
Sn - S(n - 1) =Tn
given,
Sq =63q - 3q^2
Tq = Sq - S(q - 1)
= 63q - 3q^2 -63(q - 1) +3(q -1)^2
=63(q - q + 1) -3(q ^ 2 - q^2 +2q -1 )
=63 - 6q + 3= 66 -6q
Tq = 66 -6q
according to question ,
Tp = -60
Tp = 66 - 6p = -60
126 = 6p
p = 21
T11 = 66 - 6(11) = 66 - 66 = 0
abhi178:
have you understand
yeah
thanks
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