" 2.If "f(x)=(x-1)/(x+1)" then show that (i) "f((1)/(x))=-f(x)quad " (ii) "f((-1)/(x))=(-1)/(f(x))

(a) If f(x)=(x-1)/(x+1) then show that. (i) f((1)/(x))=-f(x) (ii) f(-(1)/(x))=-(1)/(f(x)) . (b) Prove that cos20^(@)cos40^(@)cos80^(@)=1//8

If f(x)= (x-1)/(x+1) , Then show that f((1)/(x))= -f(x)

If f(x)=(x-1)/(x+1), then show that f((1)/(x))=-f(x) (ii) f(-(1)/(x))=(1)/(f(x))

If f(x)=(x-1)/(x+1) ,then show that f(1/x)=-f(x) .

If f(x)=(x-1)/(x+1) , then show that f(1/x)=-f(x)

If f(x)= (x-1)/(x+1) , Then show that f(-(1)/(x))= (-1)/(f(x))

If f(x)=(x-1)/(x+1) ,then show that f(-1/x)=-1/f(x) .

If f(x)=(x-1)/(x+1) , then show that f(-1/x)=-1/f(x) .

If f(x)=(1-x)/(1+x) , xne1 then show that f(1/x)=-f(x)

If f(x)=x^(3)-(1)/(x^(3)) show that f(x)+f((1)/(x))=0