calculus question?

Question

Help me find:

dl((2x^7)/(5) - (4)/(7x^2)) / (dlx)

Thanks

Answer 1

if i read it right... i think that it is:


{x^8/20} + {4/7x}

Answer 2

hey guy
this is very simple

dl((2x^7)/(5)-(4)/(7x^2))/(dlx)
= dl[{(2/5)x^7} -{(4/7)x^-2}]dlx

=(2/5)*(x^6)/6 -(4/7)*(x^-3)/3
=(x^6)/15-(4x^-3)/21
that is ur answer
i hope u got it
have a nice time!
Bikash jain

Answer 3

f (x) = (2/5) x^7 - (4/7) x^(-2)---------(as written)

f ` (x) = (14/5) x^6 + (8/7) x^(-3)

f ` (x) = (14/5) x^6 + (8/7) / x³