if 1/a,1/b,1/c are in ap show that b=2ac /a+c
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Answer:
Step-by-step explanation:
1/a,1/b,1/c are in ap
so 1/b-1/a=1/c-1/b
2/b=1/a+1/c
2/b=(a+c)/ac
b/2=ac/(a+c)
b=2ac/(a+c)
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