If 9th term of an ap is zero
Asked by admin @ in Math viewed by 305 People
If the 9th term of an ap is zero, prove that its 29th term is twice its 19th term
Asked by admin @ in Math viewed by 305 People
If the 9th term of an ap is zero, prove that its 29th term is twice its 19th term
Answered by admin @
Given:
We are asked to prove that:
Using the formula:
Substituting n = 9 in this formula:
20d = 2(10d).
20d = 20d.
Therefore, it is proved that the 29th term is twice the 19th term when the 9th term is 0.
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