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function composition

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Composition of functions 2019-02-24
Joshua pose la question :
Let g(x)=(x)^(2)+x-1 Find such a function f such that (fog)(x)=(x)^(4)+2(x)^(3)-3(x)^(2)-4x+6
p lui répond.
f(x)=-x^2-6x find f(x-2) 2017-10-27
Kenneth pose la question :
f(x)=-x^2-6x find f(x-2)
Penny Nom lui répond.
A stone is dropped in a lake 2015-02-14
Wendy pose la question :

Hi, I have problems solving this problem. We didn't exactly go over these kind of problems and the book doesn't have an example either. Thank you for your help!

A stone is dropped in a lake, creating a circular ripple that travels outward at a speed of 80 cm/s.
(a) Find a function g that models the radius as a function of time t.

g(t) =

(b) Find a function f that models the area of the circle as a function of the radius r.

f(r) =

(c) Find f compose g.
f compose g =


Penny Nom lui répond.
 
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