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the pth term of an a.p is a and the qth term is b.prove that the sum of its (p+q) terms is (p+q)/2[a+b+a-b/p-q]

Ashima Mehta , 12 Years ago
Grade 12
anser 1 Answers
Arun Kumar

Last Activity: 11 Years ago

(p-1)d+a1=a
(q-1)d+a1=b
d=a-b/p-q
a1=(p(p(-q)-(p-1)(a-b))/(p-q)
then we find (p+q)/2(2a1+(p+q-1)*d)
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