Find the derivative of
Let f(x) = 
By product rule,
= x5 (0 – 6 × (-9) x-9-1) + (3 – 6x-9)(5x4)
= x5 (54x-10) + 15x4 – 30x-5
∴ f’(x) = 24x-5 + 15x4
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Find the derivative of
Let f(x) =
By product rule,
= x5 (0 – 6 × (-9) x-9-1) + (3 – 6x-9)(5x4)
= x5 (54x-10) + 15x4 – 30x-5
∴ f’(x) = 24x-5 + 15x4