1. f(x)=x+12β
x+1ξ =0=>xξ =β1
Domain:(ββ,β1)βͺ(β1,β)
Range:(ββ,0)βͺ(0,β)
2. f(x)=x+33xβ
x+3ξ =0=>xξ =β3
f(x)=x+33xβ=x+33x+9β9β=3βx+39β
Domain:(ββ,β3)βͺ(β3,β)
Range:(ββ,3)βͺ(3,β)
3. f(x)=xβ73βxβ
xβ7ξ =0=>xξ =7
f(x)=xβ73βxβ=xβ73β(xβ7)β7β=β1βxβ74β
Domain:(ββ,7)βͺ(7,β)
Range:(ββ,β1)βͺ(β1,β)
4. f(x)=x2+xβ
xξ =0
f(x)=x2+xβ=1+x2βDomain:(ββ,0)βͺ(0,β)
Range:(ββ,1)βͺ(1,β)
5. f(x)=x2β1x+1β
x2β1ξ =0=>xξ =β1,xξ =1
f(x)=x2β1x+1β=(x+1)(xβ1)x+1β=βxβ11β,xξ =Β±1
Domain:(ββ,β1)βͺ(β1,1)βͺ(1,β)
Range:(ββ,0)βͺ(0,β)
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