|November 12th, 2016, 06:43 AM||#1|
Joined: Nov 2016
Hi guys I'm just struggling with a few things in my maths revision. Wondering if one of you geniuses could give me a kick in the right direction.
Given the function f(t) = 2t^2 + 4 find
f(4x + 2) = 2(4x + 2)^2 + 4
= 2(16x^2 + 16x + 4) + 4
= 32x^2 + 32x + 8 + 4 = 32x^2 + 32x + 12
Ok so look at the first line of the answer - replacing the fuction t with the new function... all good.
But this second line = 2(16x^2 + 16x + 4) + 4
Where is this second.................. 16x coming from?
Sorry I'm obviously missing something silly guys.
Last edited by Kevineamon; November 12th, 2016 at 06:53 AM.
|November 12th, 2016, 07:13 AM||#2|
Joined: Oct 2008
From: London, Ontario, Canada - The Forest City
Math Focus: Elementary mathematics and beyond
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