Take the derivative 4 times. It's easier to use power law formula by writing second term as (1/15)x-5. Also, since the terms are added, we can take the derivative separately:
x5 → 5x4 →20x3→60x2→120x
(-1/15)x-5→(1/3)x-6→-2x-7 →14x-8 →-112x-9
sum is h4(x)
Please consider a tutor. Take care.
Lee S.
Thank you!07/01/22