In a certain ap the 24th term is twice the 10th term. prove that 72th term is twice the 34th term
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Answered by
233
Given that 24th term(t24) is twice the 10th term(t10).
a + 23d = 2(a + 9d)
a + 23d = 2a + 18d
a = 5d ------ (1)
Given that 72nd term(t72) is twice the 34th term.
a + 71d = 2(a + 33d)
a + 71d = 2a + 66d
a = 5d ---- (2)
From (1) and (2), LHS = RHS.
Hope this helps!
a + 23d = 2(a + 9d)
a + 23d = 2a + 18d
a = 5d ------ (1)
Given that 72nd term(t72) is twice the 34th term.
a + 71d = 2(a + 33d)
a + 71d = 2a + 66d
a = 5d ---- (2)
From (1) and (2), LHS = RHS.
Hope this helps!
Answered by
30
Answer:a + 23d = 2(a + 9d)
a + 23d = 2a + 18d
a = 5d ------ (1)
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a + 71d = 2(a + 33d)
a + 71d = 2a + 66d
a = 5d ---- (2)
From (1) and (2), LHS = RHS
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