How do you find the slope of the graph $f (x) = 3 {(5 - x)}^{2}$ $f(x)=3(5-x)^2$ at (5,0)?

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Answer 1 · 2017-06-04T18:45:20

$0$ $0$

$Reminder$ $color(orange)"Reminder"$

$f'(x)=m" at " x=a$

$f(x)=3(25-10x+x^2)=75-30x+3x^2$

$rArrf'(x)=-30+6x$

$rArrf'(5)=-30+30=0$

How do you find the slope of the graph f(x)=3(5-x)^2f(x)=3(5−x)2f(x)=3(5-x)^2 at (5,0)?