Question

how do you find the derivative of (4)/(7x) so that it may equals (-4)/(7x^2). please show calc involved

Answer 1

rewrite it using a negative 1 exponent
\[ \frac{4}{7} x^{-1} \]
now use the power rule

Answer 2

do you know the power rule?
\[ \frac{d}{dx} x^n = n x^{n-1} \]

Answer 3

no i dont