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What is the first derivative of the following function: f(x) = a^(-bx)?

(I am lost with this question)

1 answer

Review your chain rule: if

y = a^u where u is a function of x, then
y' = ln(a) a^u u'

So, for this one,

f'(x) = ln(a) a^(-bx) (-b)
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