# Math

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I am having trouble figuring out how to find the domains an example problem is p(x)=2x-2

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R (real numbers as x can equal anything

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p(x)=2x-2

give different values for x and find p(X).Then x =domain,& p(X)=co domain

example if x=1`,then p(X)=2.1 -2=0
x=2. thenP(X)=2.2-2= 2

in this case is domain is 1,2

codomain is 0,2

that is 1 mapped to zero
2 mapped to 2

hope it is clear?

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