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Sat 2 Jul, 2005 09:10 pm
I have two questions:
State the domain, range and intercepts, if any of f.
1) If 4^(x) = 7, what does 4^(-2x) equal?
2) If 3^(-x) = 2, what does 3^(2x) equal?
1) if 4^x=7 then 4^(-x)=1/7
and 4^(-2x)=4^(-x)*4^(-x)=1/7*1/7=1/49
2) same operation
3^(-x)=2 then 3^x=1/2
and 3^(2x)=3^x*3^x=1/2*1/2=1/4
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