Question

find the derivative of 14x^7 when x=1 to sqrt(x)

a. 7x^3
b. 14x^(7/2)
c. 7/4x^5-7/4
d. 28/3x^5

Answer 1

integrate it or differentiate it?

Answer 2

integrate it please

Answer 3

integrate (14x^7)
=(14/8)x^8
=(7/4)x^8

put x=1
(14/8)x^8
=(7/4)


put sqrt(x)
(14/8)x^8
=(14/8)x^4
=(7/4)x^4

ans
= (7/4)x^4 -(7/4)
=(14/8)(x^4) - (14/8)

Answer 4

wow, thank you!

Answer 5

you are welcome :D