Sunday

November 23, 2014

November 23, 2014

Posted by **Shreya** on Thursday, September 27, 2012 at 9:48pm.

f o g(x)=f(g(x)) --> I know that this is eqivalent to f(g(x))

Given f(x) = 2x+1, and g(X) = 3x+1 find:f o g(x)=f(g(x))

This is what I did, but I don't think Ive solved it correctly

f(g(x)) = f(x-3)

f(x-3) = 1(x-3)-3x+2

=x-3-3x+2

f(g(x)) = -2x-1

The perimeter P of a square and the area A of a square r functions of its side length S. write area as function of Perimeter. ?

Also write out the square's area as function of length of its diagonal.

- Pre-Calculus -
**Steve**, Friday, September 28, 2012 at 10:42amf(g) = 2g+1 = 2(3x+1)+1 = 6x+3

dunno where you got x-3

P = 4s

A = s^2 = (P/4)^2 = P^2/16

d = s√2

A = s^2 = (d/√2)^2 = d^2/2

**Answer this Question**

**Related Questions**

Pre-Calculus - Composition of Functions If f(x) = 2x+1 find A. f o f(x) f(f(x...

Function compostions - Sorry I had to repost, I left somethings out. Can you ...

Functon compostions - Can you please check my answers? For the given functions f...

pre calculus - consider the functions f(x)=x^3-3 and g(x)=3 sqrt x+3: a. find f(...

Calculus - Find the sum and difference functions f + g and f – g for the ...

pre calculus - Having a bit of a problem with this for the given functions f, g ...

Calculus - Math questions, please help me? :(? Find the composite functions f o ...

algebra - Find two functions, f and g, to express the given function (y = [4/(x-...

Alg/2 Trig - Given the functions f(x)=-x^2+7 and g(x)=3x+4 find f(g(-5)) Write ...

pre-calculus - find the functions f and g so that Fog = H. H(x)=/2x+1\