Evaluate the derivative of the function p(x) = (7x)⁻ˡⁿ⁽⁷ˣ⁾⁻¹
a) -7x⁻ˡⁿ⁽⁷ˣ⁾⁻¹
b) -7 ln(7x) .(7x)⁻ˡⁿ⁽⁷ˣ⁾⁻¹
c) 7 ln(7x) . (7x)⁻ˡⁿ⁽⁷ˣ⁾⁻¹
d) -7x ln(7x) . (7x)⁻ˡⁿ⁽⁷ˣ⁾⁻¹