the sum of three consecutive term of G.P is 39/10 and their product is 1 find the term s
Question
The sum of three consecutive terms of G.P is and their product is 1. Find the terms.
Solution
Let's denote the three consecutive terms of the geometric progression (G.P) as a/r, a, and ar.
Given that the sum of these terms is 39/10, we can write the equation:
a/r + a + ar = 39/10.
We also know that the product of the terms is 1, so we can write the equation:
(a/r) * a * ar = 1.
Solving the second equation gives us a^3 = r, so we can substitute this into the first equation to get:
a/r + a + a*r = 39/10.
Substituting a^3 for r gives us:
a/a^3 + a + a*a^3 = 39/10.
Simplifying this gives us:
1/a^2 + 1 + a^2 = 39/10.
Multiplying through by a^2 gives us:
1 + a^2 + a^4 = 39/10 * a^2.
This is a quadratic equation in a^2, which we can solve to find the values of a. Once we have the values of a, we can substitute them back into the equation a^3 = r to find the values of r.
Finally, we can substitute the values of a and r into the expressions for the terms of the G.P to find the terms themselves.
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