If f(x) = 5x – 2, x > 0, find f-'(x), f-'(7), for what value of x is f(x) = 0.
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If f(x) = 5x – 2, x > 0, find f-'(x), f-'(7), for what value of x is f(x) = 0.
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f(x) =0
5x-2=0
x=2/5
f `(x) = 5
f `(7) = 5
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