Question

F'(x) if f( x) = 8/5x^4 ?

please help i don't understand this problem

Answer 1

`f(x)=8/(5x^4)=8/5x^-4`
After differentiating,
`f^'(x)=8/5×-4×x^(-4-1`[using the rule of differentiating of `x^n` `=>d/(dx)x^n=nx^(n-1`
So we get ,
`f^'(x)=-32/5×x^-5=-32/(5x^5`
Hope it helps...
Thank you....