Find the domain

6) D ( r) = 2' ; show that D ( 1+1) = 20 ( 1 ) 1 .) if f (x ) = sinx ; show that f ( 2x) = 2 4 ( x ) f ( 2 1 - x ) 8.) if + (x) = 10* and D(x) = 109 x show that + (e(x) = ( e . f ) ( x ) = x a .) if F ( u , V ) u= y lty J Find ; F ( u ) Y ) + F ( U. V )