Find the range of values of x for which 10 - f(x) is positive.

Could somebody tell me how to do this? I've already done the hard bit...

Also, f(x) = (x-2)^2 + 1

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- September 16th 2012, 04:33 AMsmr101Quick functions question...
Find the range of values of x for which 10 - f(x) is positive.

Could somebody tell me how to do this? I've already done the hard bit...

Also, f(x) = (x-2)^2 + 1 - September 16th 2012, 04:40 AMProve ItRe: Quick functions question...
"Done the hard bit". Exactly which part is the hard bit?

- September 16th 2012, 05:28 AMcn06Re: Quick functions question...
Just plunge f(x) in to 10-f(x) and solve for x

10-((x-2)^2+ 1>0

(x-2)^2<9

**-1<x<5**