Question

lim Δx→0+ ((5/x+Δx)-(5/x))/Δx

Answer 1

Here, f(x)=5/x and you need to find its derivative that is f'(x)

Answer 2

thing is, we haven't discussed derivatives yet

Answer 3

geth the common denominator in the top part and then see what you get.

Answer 4

(5Δx/x²+xΔx)/Δx

Answer 5

u missed the negative sign

Answer 6

now rewrite the complex fraction as multiplication, i.e.,
(a/b)/(c/d) = a/b * d/c

Answer 7

and u can cancel delta x also..

Answer 8

(5Δx/x²+xΔx) * (1/Δx)

Answer 9

5Δx/Δx(x²+xΔx)

Answer 10

dont you think you are missing negative sign?

Answer 11

i cant seem to find where it is missing from