[" 12."(1)/(41)2^(x-1)+2^(x+1)=320vec x" ,al "x" an "417],[[" (a) "6," (b) "8],[" (c) "5," (d) "7]]

If 2^(x-1)+2^(x+1)=320, then find the value of x.

f(x)=(x)/(x+1), [1,2]

(x+1)/(2)+(x-1)/(3)=(5)/(12)(x-2)

If x+1/x=2 then x^(12)-1/x^(12)=

L e tf(x)={(x^4-5x^2+4)/(|(x-1)(x-2)6),x!=1,2 12,x=2x=1 then f(x) is continuous on the set R (b) R-[1] (c) R-[2] (d) R-[1,2]