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I’ve been trying to find multiple solutions to solve this but have no luck :/

I’ve been trying to find multiple solutions to solve this but have no luck :/-example-1
User Sato
by
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2 Answers

3 votes
Optis the correct answer f= -3
User Sdolgy
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We have the graphs of the functions

f(x) ------ the left graph in the picture

g(x) ----- the right graph in the picture

We need to find


(f+g)(3)

This means we need to find


f(3)+g(3)

To find f(3) look at the left graph

Look for the value of y at x = 3

At x = 3 the value of y is 0, then


f(3)=0

To find g(3), look at the right graph

Look for the value of y at x = 3

At x = 3 the value of y is 0, then


g(3)=0

Add them


\begin{gathered} f(3)+g(3)=0+0 \\ (f+g)(3)=0 \end{gathered}

a)

(f + g)(3) = 0

We need to find


(f-g)(2)

That means we need to find


f(2)-g(2)

To find f(2) look at the left graph

Look for the value of y at x = 2

At x = 2 the value of y is 1, then


f(2)=1

To find g(2) look at the right graph

Look for the value of y at x = 2

At x = 2 the value of y is 4, then


g(2)=4

Subtract them


\begin{gathered} f(2)-g(2)=1-4 \\ \\ (f-g)(2)=-3 \end{gathered}

b)

(f - g)(2) = -3

User Jannes Carpentier
by
7.8k points

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