I've become a bit confused on a question that is:

let and

Calculate

I'm not too sure. Is it:

or ?

Thanks very much!

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- Mar 15th 2012, 11:13 AMBobtheBobHow to solve the function fg(2x)
I've become a bit confused on a question that is:

let and

Calculate

I'm not too sure. Is it:

or ?

Thanks very much! - Mar 15th 2012, 11:16 AMKanwar245Re: How to solve the function fg(2x)
I think fg should be 2x^3 + x^2 - 2x - 1 and then you just plug in 2x in place of x to get your ans.

- Mar 15th 2012, 11:23 AMprincepsRe: How to solve the function fg(2x)
- Mar 15th 2012, 11:32 AMBobtheBobRe: How to solve the function fg(2x)
Ok thanks very much for the help! Much appreciated.

- Mar 15th 2012, 11:37 AMKanwar245Re: How to solve the function fg(2x)
- Mar 15th 2012, 12:02 PMBobtheBobRe: How to solve the function fg(2x)
Oh right. I originaly got 16x^2 + 8x though although I wasn't sure of it...?