(1/(1+x^(b-a) + x^(c-a)))+(1/(1+x^(a-b) + x^(c-b)))+(1/(1+x^(b-c) + x^(a-c))) equals.

Question

\(\frac{1}{1+x^{b-a}+x^{c-a}}+\frac{1}{1+x^{a-b}+x^{c-b}}+\frac{1}{1+x^{b-c}+x^{a-c}}\) equals.

(a) \(\frac12\)

(b) 2 

(c) 1

(d) 0

Answer 1

(c) 1

\(\frac{1}{1+x^{b-a}+x^{c-a}}+\frac{1}{1+x^{a-b}+x^{c-b}}+\frac{1}{1+x^{b-c}+x^{a-c}}\)