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Let

f(x) = 2x + 9 if x < -2

f(x) = 5 - 2x if x >= -2

 

Find f(7).

 Jul 1, 2021
 #1
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Find f(7)

 

Hello Guest!

 

\(f(x) = 2x + 9\ | if\ x < -2\\ \color{blue}f(x) = 5 - 2x\ |\ if\ x >= -2 \)

 

\(f(7)=5-2x=5-2\cdot 7=-9\)

laugh  !

 Jul 1, 2021
edited by asinus  Jul 1, 2021

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