SOLUTION: Find the value for the function NEED TO FIND F(2X) WHEN F(X) (I am not able to type the math symbols for sq rt)PROBLEM READS SEVEN X SQ PLUS 4 X UNDER THE SQ RT SYMBOL, This is

Question 124580: Find the value for the function NEED TO FIND F(2X) WHEN F(X)
(I am not able to type the math symbols for sq rt)PROBLEM READS SEVEN X SQ PLUS 4 X UNDER THE SQ RT SYMBOL,
This is a take home quiz
I think you substitute x w/ (2x)....ex 7(2x)2 + 4(2x)= 28x2=12x
SORRY IF THIS IS TOO CONFUSING....THANKS FOR YOUR HELP
lIVEY
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
Find the value for the function NEED TO FIND F(2X) WHEN F(X)
(I am not able to type the math symbols for sq rt)PROBLEM READS SEVEN X SQ PLUS 4 X UNDER THE SQ RT SYMBOL,
--------------------------------
f(x) = sqrt(7x^2+4x)
f(2x) = sqrt(7(2x)^2+4(2x))
= sqrt(28x^2+8x)
= sqrt[4(7x^+2x)]
= 2*sqrt(7x^2+2x)
====================
Cheers,
Stan H.
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