Solving an equation of sums

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Konstantinos on 2 Feb 2015
Commented: Konstantinos on 3 Feb 2015
I want to find y in an equation which has the following form:
1/(1+y)^1 + 1/(1+y)^2 + 1/(1+y)^3 + 1/(1+y)^4 + 1/(1+y)^5 + 1/(1+y)^6 + 1/(1+y)^7 = c
where c is a known constant real value.
Any help could be useful. thanks in advance!

Accepted Answer

Torsten on 2 Feb 2015
Use "roots" to calculate the real zero x0 of the polynomial
Then y0=1/x0-1 will solve your above equation.
Best wishes
Konstantinos on 3 Feb 2015
Thanks a lot!!

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