[(1)/(1+log_(t)a+log_(b)c)+(1)/(1+log_(c)a+log_(c)b)],[+(1)/(1+log_(2)b+log_(a)c)" has the value equal to "]

(1)/(1+log_(b)a+log_(b)c)+(1)/(1+log_(c)a+log_(c)b)+(1)/(1+log_(a)b+log_(a)c) has the value equal to

(1)/(1+log_(b)a+log_(b)c)+(1)/(1+log_(c)a+log_(c)b)+(1)/(1+log_(a)b+log_(a)c)

1/(1 + log_(b) a + log_(b) c)+ 1/(1 + log_(c)a + log_(c)b) + 1/(1 + log_(a)b + log_(a) c) has the value equal to

( Prove that )/(1+log_(b)a+log_(b)c)+(1)/(1+log_(c)a+log_(c)b)+(1)/(1+log_(a)b+log_(a)c)=1

1/(1+log_b a+log_b c)+1/(1+log_c a+log_c b)+1/(1+log_a b+log_a c)

(1+log_(c)a)log_(a)x*log_(b)c=log_(b)x log_(a)x

Show that log_(b)a log_(c)b log_(a)c=1

(1)/(log_(a)(b))xx(1)/(log_(b)(c))xx(1)/(log_(c)(a)) is equal to